How can I order more polishing grits?

We have a polishing grits kit of 4 lbs, just visit the link: https://www.amazon.com/dp/B0B74KYP44. For any questions and concerns, please contact our customer service via: support@komestone.com, we'll get back to you very soon. For any issues about this rock tumbler, we promise to solve timely. We are standing behind our brand and products. Thanks for purchasing from us.

How much polishing grits should I use?

For better results, we would advise you to add 2 tbsp or more of polishing grits per pound of rocks, and 0.5 lb-1 lb of the ceramic pellets for protect rocks from scratches.

What is the rotation speeds per minute?

Normally speaking, the speeds is quite steady. Speed 1：770 Speed 2：920 Speed 3：1080

Can I add more than 3 lbs rocks into this barrel for tumbling?

The capacity of the barrel for the K2 Elite rock tumbler is 3 lbs, so you can add as much as 3 lbs of rocks, and then add water, and polishing grits and ceramic pellets. For any questions and concerns, please contact our customer service via: support@komestone.com, we'll get back to you very soon. For any issues about this rock tumbler, we promise to solve timely. We are standing behind our brand and products. Thanks for purchasing from us. Anne.

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Ultra Quiet Rock Tumbler Kit for Adults – 3LB Professional Rock Polisher with Noise-Reduction Cover & Brushless Motor, 3 Speeds, 9-Day Timer & Complete Accessories for Hobbyists & Collectors

Product ID: 542553468

Details

Brand
KomeStone
Color
Black
Power Source
Corded

⏳9-day programmable timer

🔇6X quieter operation

⚙️Brushless motor for durability

₩391517

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔮 Transform your hobby into a silent masterpiece with pro-grade polish power!

SMART AUTOMATION - 3-speed settings plus a 9-day timer with settings recall means flawless, hands-off polishing from start to finish.
MAXIMIZED CAPACITY - 3LB barrel holds 50% more stones than entry-level models, letting you tackle bigger projects with fewer batches.
ALL INCLUSIVE PRO KIT - Comes complete with rough stones, polishing grits, ceramic pellets, spare belts, and a step-by-step guide—everything to start polishing like a pro.
WHISPER QUIET PRECISION - Runs up to 6X quieter with noise-reduction cover and soft rubber barrel walls—perfect for shared spaces and late-night creativity.
ENGINEERED FOR ENDURANCE - Premium brushless motor ensures smooth, consistent polishing with minimal wear—your long-term workshop companion.

The KomeStone Ultra Quiet Rock Tumbler Kit features a 3LB soft rubber barrel and a brushless motor that runs up to 6X quieter than standard models. With 3 speed settings, a 9-day programmable timer with settings recall, and a comprehensive accessory kit, it delivers professional-quality rock polishing ideal for serious hobbyists and collectors. Its noise-reduction cover and durable design make it perfect for use in apartments or shared workspaces, backed by a 90-day satisfaction guarantee and 1-year warranty.

Specifications

ASIN	B0C58TH7W6
Best Sellers Rank	#15,181 in Toys & Games ( See Top 100 in Toys & Games ) #9 in Kids' Rock Tumblers
Brand Name	KomeStone
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (866)
Included Components	1 extra belt for spare use and 4 polishing grits, 1 lb rough stones, illustrated tutorial learning guide, 1 x sifter, 1 x screwdriver, 1 set jewelry Fastenings, 1 x tumbler machine, 1 x 3 lb barrel, 1.5m AC adapter, Warranty Card ( Lifetime customert service email: [email protected] )
Item Type Name	Rock Tumbler
Item Weight	3.9 Kilograms
Manufacturer	KomeStone
Manufacturer Part Number	CA-KS0515RT46
Material Type	Cutting-Edge brushless motor, Please email to our after-sales service center ( [email protected] ) to receive the extra bag of rocks for spare use after placing the order. Our customer service will solve any issues timely., Stainless Steel, Tyre grade rubber, 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝
Model Number	CA-KS0515RT46
Power Source	Corded Electric
Unit Count	1.0 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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