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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Description

🔮 Transform Rough Rocks into Polished Masterpieces—Silently!

WHISPER QUIET INNOVATION - Cutting-edge brushless motor with noise reduction lets you tumble indoors without disruption.
BUILT TO LAST SUPPORT YOU - 90-day satisfaction guarantee, 1-year warranty, plus lifetime accessory replacements and 24/7 US-based support.
PRO LEVEL POLISH ZERO MESS - Leak-proof stainless steel lid and precision ceramic media deliver museum-quality shine every time.
MAX CAPACITY MAX CREATIVITY - Generous 3 lbs soft rubber barrel means more rocks polished per batch—perfect for ambitious projects.
ALL INCLUSIVE STEM EXPERIENCE - Complete kit with rough rocks, 4-stage grit system, and full-color guide—ideal for kids and pros alike.

The KomeStone K2 Elite is a professional-grade rock tumbler featuring an ultra-quiet brushless motor and a large 3 lbs soft rubber barrel for efficient, mess-free polishing. Designed for all ages, it includes a complete 4-stage grit polishing system, rough rocks, and detailed instructions, making it a perfect STEM gift. Backed by a 90-day satisfaction guarantee, 1-year warranty, and lifetime accessory replacement with 24/7 US-based support, it combines cutting-edge technology with durability and ease of use.

Specifications

Product Dimensions	17.27 x 20.07 x 20.07 cm; 3.9 kg
Manufacturer recommended age	6 years and up
Item model number	CA-KS0515RT46
Educational Objective(s)	Creativity, Observation, Patience
Assembly Required	No
Batteries Required?	No
Batteries Included?	No
tech_spec_battery_description_toys	No batteries required
Material Type(s)	Cutting-Edge brushless motor Tyre grade rubber Top quality of stainless steel 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 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.
Color	A: K2 Elite (Brushless Motor & Noise Reduction)
ASIN	B0C58TH7W6

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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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.