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.

K2 Elite Noise Reduction | Desertcart Spain

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 381.86

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔮 Transform rough stones into dazzling treasures—quietly, safely, and effortlessly!

FAMILY SAFE DESIGN - Protective cover keeps little hands safe, making it ideal for kids 8+ and STEM learning at home.
BRUSHLESS MOTOR POWER - Advanced brushless motor ensures smooth, long-lasting performance with less heat and wear.
MAXIMIZED 3 LB CAPACITY - 50% more tumbling space than entry models—polish more stones per batch, from agates to crystals.
WHISPER QUIET TUMBLING - Runs up to 6X quieter with noise-reduction cover & soft rubber barrel—perfect for apartments and shared spaces.
SMART CONTROLS MEMORY - 3 speeds, 9-day timer, and power-loss memory deliver consistent, hands-free polishing every time.

The KomeStone K2 3LB Brushless Rock Tumbler is a premium, ultra-quiet polishing kit designed for adults and kids. Featuring a brushless motor for durability, a noise-reduction cover for peaceful operation, and a 3LB rubber barrel for larger batches, it offers smart controls with a 9-day programmable timer and memory recall. Complete with polishing grits, rough stones, and a detailed guide, it’s perfect for family STEM projects, hobbyists, and geology enthusiasts seeking professional results at home.

Specifications

ASIN	B0C58TH7W6
Best Sellers Rank	#7,793 in Toys & Games ( See Top 100 in Toys & Games ) #3 in Kids' Rock Tumblers
Brand Name	KomeStone
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (920)
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 kg
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
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
Unit Count	1 Count

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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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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