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FREE SHIPPING ON ALL ORDERS!
FREE SHIPPING ON ALL ORDERS!

Explore Versatile Tumbler Options: 8 Barrel Sizes & 19 Combinations

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Achieve a flawless finish every time with MJR Tumblers 12,000 mesh Aluminum Oxide Extreme Polish.

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The Secret to Perfect Cascading Action: Round Barrels with Lifter Bars

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$18.50 - $112.00
$18.50 - $112.00
$18.50 - $112.00
$18.50

Silicon Carbide 60/90 Coarse Rock Grit Stage 1, FREE SHIPPING!

MJR Tumblers
In stock

60/90 Grit Silicon Carbide. Comes with FREE Polishing Instructions. Black silicon carbide coarse grit used during the first stage of tumbling. This...

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$18.50 - $112.00
$18.50 - $112.00
$18.50 - $112.00
$18.50
$14.50 - $78.75
$14.50 - $78.75
$14.50 - $78.75
$14.50

Rock Tumbler Refill Grit Kit, FREE SHIPPING!

MJR Tumblers
In stock

Four steps of tumbling grit.  Step 1: 60/90 Silicon Carbide Step 2: 120/220 Silicon Carbide Step 3: 400/600 Silicon Carbide Step 4: 12,000 White F...

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$14.50 - $78.75
$14.50 - $78.75
$14.50 - $78.75
$14.50
$19.99 - $172.50
$19.99 - $172.50
$19.99 - $172.50
$19.99

Aluminum Oxide 1200 Polish Rock Grit Stage 4 FREE SHIPPING!!!

MJR Tumblers
In stock

1200 Grit Aluminum Oxide. Comes with FREE Polishing Instructions. White fused polish grit used during the fourth stage of tumbling. This grade can ...

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$19.99 - $172.50
$19.99 - $172.50
$19.99 - $172.50
$19.99
$16.25 - $83.00
$16.25 - $83.00
$16.25 - $83.00
$16.25

Rock Tumbler Refill Grit Kit with Pellets, FREE SHIPPING!

MJR Tumblers
In stock

Four steps of tumbling grit with plastic pellets(colors vary).   Pellets Step 1: 60/90 Black Silicon Carbide Step 2: 120/220 Black Silicon Carbide ...

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$16.25 - $83.00
$16.25 - $83.00
$16.25 - $83.00
$16.25
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$18.00 - $112.00
$18.00 - $112.00
$18.00
$18.50 - $112.00
$18.50 - $112.00
$18.50

Silicon Carbide 36 Extra Coarse Rock Grit Stage 1, FREE SHIPPING!

MJR Tumblers
In stock

36 Grit Silicon Carbide. Comes with FREE Polishing Instructions. Black silicon carbide extra coarse grit used during the first stage of tumbling. T...

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$18.00 - $112.00
$18.00 - $112.00
$18.00
$18.50 - $112.00
$18.50 - $112.00
$18.50
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MJR Tumblers are versatile, with 8 different barrel sizes and 19 different barrel combinations possible.

Achieve a Flawless Finish with MJR Tumblers’ Grit Kits - With 12,000AO Polish!

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Round vs. Hexagon: Faster Polishing with Round Barrels

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Choose MJR Tumblers for Faster, Smoother Polishing

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Single Barrel Brass Tumbler with Stainless Steel Pins

Single Barrel Brass Tumbler with Stainless Steel Pins

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$500.00
$500.00 - $749.00
$500.00
$445.00
$445.00 - $599.00
$445.00

One Base Unit. Tumbling Barrel. Stainless Steel Pins. 1 pound steel pins for the 15pound barrel and 5pounds steel pins for the 40pound barrel. Instruction Manual for care and usage. Polishing/Tumbling Instructions for multiple applications

Item Details:

Heavy duty 16 gauge welded steel frame - powder coated to be scratch and corrosion resistant. Rubber coated steel rollers. Industrial duty flanged STAINLESS STEEL BALL BEARINGS (no plastic sleeve bearings to wear out). Fins inside the barrel for optimum efficiency and performance - keeps contents revolving. 6 foot - 18 gauge power cord. Heavy duty motor with automatic thermo overload protection - intended for continuous use. Commercial grade plastic barrel that seals to be water and air tight. Tapered neck for easy loading and unloading. Quick and easy to use heavy duty rubber cap

*All MJR Tumblers come with a TWO YEAR WARRANTY to cover defects in materials and craftsmanship. Reliable US company producing highest quality products for over 20 years. We offer the most versatile tumblers on the market today.

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Experience up to 50% faster polishing with MJR Tumblers.

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FAQ

How much is in each grit kit?

The rule of thumb is 1oz per pound of rocks you're going to polish for step 1 and step 2 and 1/2oz per pound of rocks for step 3 and step 4.

For example: A 30 pound grit kit doesn't not mean 30 pounds of grit. That would be 30oz of step 1, 30oz of step 2 and 15oz of step 3 and 15oz of step 4.

What stones can I polish?

Here's a simple and easy way to know. It’s recommended that the stones you plan to polish in your rock tumbler to be harder than glass. A very easy test to confirm if your stones are indeed harder than glass is to lay a piece of glass on a flat surface. Then with firm (not excessive) pressure drag a point of the stone across the glass. A powdery streak will be made. Blow away the powder. If there is a scratch in the glass the powder was from the glass itself and your stones are good to go!

My stones are shiny when they’re wet but hazy when dry after the final polishing step?

Try burnishing your stones! Fill your barrel ¼ full of plastic pellets, put your polished stones in the barrel until it’s ¾ full, add ½ tbs of Dawn Dishwashing soap and tumble 24 to 48 hours. This step will clean and polish your stones removing any haze on them.

Rock Tumblers with Grit Kits - 18 Different Combinations Available!

Rock Tumblers with Grit Kits - 18 Different Combinations Available!

$360.00 - $599.00
$400.00
$360.00 - $599.00
$400.00

Small Base is 14 inches

Large Base is 21 inches

Each Listing Contains:

  • One Base Unit.
  • One Tumbling Barrel.
  • Grit Kit for polishing stones <Coarse 60/90 Silicon Carbide, Fine 120/220 Silicon Carbide, Pre-Polish 400/600 Silicon Carbide, Polish 12,000 Aluminum Oxide, Plastic Pellets(colors vary)>.
  • Instruction Manual for care and usage.
  • Polishing/Tumbling Instructions for multiple applications

Item Details:

  • COMPLETE YOUR ROCK TUMBLING EXPERIENCE: Get your rocks ready for display with this complete rock tumbling kit. Easily turn rough stones into beautiful, polished gems with the included grit set and tumbler. This rock tumbler comes with a grit set which makes it easier for you to start tumbling your rocks. With the included instructions, you'll be well on your way to a wonderful rock collection in no time!
  • WITH SEALED MULTI-BARREL: Get the perfect polish with our commercial grade polymer rock tumbler barrels. for your rocks without any hassle. Built with a water and air tight seal that ensures nothing gets out or in. Tapered neck for easy loading and unloading of rocks, pebbles, or other materials. It comes with durable polymer barrels and pre-measured grit set make it a no brainer to get started with your rock tumbling. Get the most out of every project with no wasted time or resources!
  • ROCK TUMBLER WITH PREMIUM BUILD: Our rock tumbler has lifter bars that move content around the barrel for maximum efficiency and effectiveness in production. With its innovative design, the content of the barrel is constantly being rotated and moved, ensuring perfect results every time.
  • ALL-INCLUSIVE SET: This kit comes with everything you need to get started, including a sturdy tumbling barrel, one base unit. Grit Kit for polishing stones (Coarse 60/90 Silicon Carbide, Fine 120/220 Silicon Carbide, Pre-Polish 400/600 Silicon Carbide, Polish 12,000 Aluminum Oxide, Plastic Pellets).
  • COMES WITH INSTRUCTION MANUAL FOR CARE AND USAGE: Our Rock Tumbler has an instruction manual for care and usage to ensure great results. Polishing/Tumbling Instructions for multiple applications. With all the necessary components included in the kit, you can start transforming ordinary rocks and sea glass into polished gems right away, making this kit the perfect choice to explore the fascinating world of geology and gemstone polishing.

 

*All MJR Tumblers come with a TWO YEAR WARRANTY to cover defects in materials and craftsmanship. Reliable US company producing highest quality products for over 20 years. We offer the most versatile tumblers on the market today.

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MJR Tumbler's powerful motors operate at the optimum barrel speed for faster flawless results.

$360.00 - $599.00
$360.00 - $599.00
$360.00 - $599.00
$360.00

Rock Tumblers with Grit Kits - 18 Different Combinations Available!

MJR Tumblers
In stock

Small Base is 14 inches Large Base is 21 inches Each Listing Contains: One Base Unit. One Tumbling Barrel. Grit Kit for polishing stones <Co...

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$360.00 - $599.00
$360.00 - $599.00
$360.00 - $599.00
$360.00
Save up to 20% Save %
$500.00 - $749.00
$500.00 - $749.00
$500.00
$445.00 - $599.00
$445.00 - $599.00
$445.00

Single Barrel Brass Tumbler with Stainless Steel Pins

MJR Tumblers
In stock

One Base Unit. Tumbling Barrel. Stainless Steel Pins. 1 pound steel pins for the 15pound barrel and 5pounds steel pins for the 40pound barrel. Inst...

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$500.00 - $749.00
$500.00 - $749.00
$500.00
$445.00 - $599.00
$445.00 - $599.00
$445.00
Save up to 20% Save %
Save up to 18% Save %
$350.00 - $699.00
$350.00 - $699.00
$445.00
$350.00 - $575.00
$350.00 - $575.00
$350.00

Single Barrel Rock Tumbler - 11 Different Combinations Available!

MJR Tumblers
In stock

Small Base is 14 inches Large Base is 21 inches Listing Includes: *One Base Unit. *One Tumbling barrel.  *Instruction Manual for care and usage. *P...

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$350.00 - $699.00
$350.00 - $699.00
$445.00
$350.00 - $575.00
$350.00 - $575.00
$350.00
Save up to 18% Save %
$399.00 - $525.00
$399.00 - $525.00
$399.00 - $525.00
$399.00

Multi-Barrel Rock Tumblers - 7 Different Combinations Available!

MJR Tumblers
In stock

Small Base is 14 inches Large Base is 21 inches Listing Includes: *One Base Unit. *Tumbling barrels.  *Instruction Manual for care and usage. *Poli...

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$399.00 - $525.00
$399.00 - $525.00
$399.00 - $525.00
$399.00
Save up to 18% Save %
$475.00 - $699.00
$475.00 - $699.00
$475.00
$395.00 - $575.00
$395.00 - $575.00
$395.00

Single Barrel Brass Tumbler

MJR Tumblers
In stock

Listing Includes: *One Large Base Unit. *One tumbling barrel.  *Instruction Manual for care and usage. *Polishing/Tumbling Instructions for multipl...

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$475.00 - $699.00
$475.00 - $699.00
$475.00
$395.00 - $575.00
$395.00 - $575.00
$395.00
Save up to 18% Save %
Save up to 9% Save %
$480.00
$480.00 - $575.00
$480.00
$435.00 - $575.00
$435.00 - $575.00
$435.00

Single Barrel 15 Pound Beach Sea Glass Tumbler with Free Polishing Grit

MJR Tumblers
In stock

Listing Includes: *One Large Base Unit. *One 15 pound tumbling barrel or 40 pound tumbling barrel  *15 pound barrel gets 1 pound of 60/90 or the 4...

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$480.00
$480.00 - $575.00
$480.00
$435.00 - $575.00
$435.00 - $575.00
$435.00
Save up to 9% Save %
$95.00 - $250.00
$95.00 - $250.00
$95.00 - $250.00
$95.00

Tumbler Barrels 8 Different Sizes Aavailable!

MJR Tumblers
In stock

Commercial Duty Tumbler Barrel Barrels are made of a very durable wear resistant plastic and are tapered at the mouth for easy unloading. They are ...

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$95.00 - $250.00
$95.00 - $250.00
$95.00 - $250.00
$95.00
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Blogs

  • Matthew Romey

    BARREL PRESSURE TRICK

    OK, so your experiencing pressure building up in your barrel as it rolling? Here's a trick that seems to work pretty well. Add a couple antacid tables to each of the first two stages. I'm partial to Cherry Flavor myself...

    Read now
  • Matthew Romey

    WHAT STONES YOU CAN POLISH

     WHAT STONES YOU CAN POLISH Here's a simple and easy way to know. Its recommended that the stones you plan to polish in your rock tumbler to be harder than glass. A very easy test to confirm if your...

    Read now
See more

Barrel Configurations