SKU: 34500979359

KomeStone K1 Rock Tumbler Kit - 2.5LB Capacity, Digital Timer, Variable Speeds, Brush Motor, 11.3x9.17x5.87 inches

Sale price$73.76 Regular price$81.95
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

KomeStone K1 Rock Tumbler Kit - 2.5LB Capacity, Digital Timer, Variable Speeds, Brush Motor, 11.3x9.17x5.87 inchesThe KomeStone Advanced Professional Rock Tumbler Kit is an innovative geology STEM toy designed for both kids and adults. This versatile rock polisher allows users to transform rough rocks into smooth gemstones while providing an engaging educational experience. Constructed with a high quality Japanese carbon motor, this rock tumbler features a brush motor variant known as K1. The design prioritizes user friendliness and educational value, making it

The KomeStone Advanced Professional Rock Tumbler Kit is an innovative geology STEM toy designed for both kids and adults. This versatile rock polisher allows users to transform rough rocks into smooth gemstones while providing an engaging educational experience.

Constructed with a high-quality Japanese carbon motor, this rock tumbler features a brush motor variant known as K1. The design prioritizes user-friendliness and educational value, making it an ideal tool for learning about geology and patience. The kit includes a full-color illustrated learning guide, ensuring that even beginners can successfully operate the tumbler. With its advanced features, the KomeStone kit is perfect for hobbyists and budding geologists alike.

Key Features:
  • Original Manufacture & Brand Outlet: The KomeStone brand ensures quality with its unique rock tumbler design.
  • Complete Kit: Includes tumbler machine, barrel, 1 lb of rough rocks, three belts, four polishing grits, ceramic filler media, and an instructional book.
  • Enhanced Performance: Equipped with a 9-day timer display, three-speed controls, and pause & resume functions for customized polishing experiences.
  • Extra Large Capacity: The 2.5 lb barrel allows for polishing more rocks simultaneously compared to standard 1 lb drums.
  • Low Noise Operation: Features 100% soft rubber barrels that reduce noise levels by 75%, making it quieter than traditional plastic drums.
  • Educational Value: A hands-on tool for learning about geology, patience, and the art of jewelry making, suitable for all ages.
  • Upgraded User Experience: The LCD screen and various polishing recipes enhance the overall fun and effectiveness of rock tumbling.

The KomeStone Advanced Professional Rock Tumbler Kit is an excellent choice for educators, parents, and rock enthusiasts. This comprehensive kit encourages creativity and scientific exploration, making it a thoughtful gift for all ages. Whether you are polishing rocks for jewelry making or simply enjoying the process of transformation, this tumbler offers a rewarding experience that blends learning with fun.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34500979359

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Savannah Hernandez
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★★★★★ 5
Very good Náutica Wallet
Color: J-Class - Black
Love it. It’s practical and comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
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ASAF SALMAN
Waukegan, US
★★★★★ 5
Great Product!
Color: Two Tone - Black/Grey
Very nice wallet, well designed to provide both functionality and durability (quality materials). It has enough storage space for cards and exchanges. Good value for money.
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Reviewed in the United States on February 21, 2025
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Carrie
Charlottesville, US
★★★★★ 5
My picky husband approves of it.
Color: Two Tone - Cobalt Blue
Nice quality. Fits the right amount of slots for cards. Not too big or bulky. The wallet is very nice with the built in anti theft to protect your personal information. The clip on the side makes it perfect for cash only transactions. It is a nice front pocket wallet. Came in a nice tin can as well. The blue on blue that I got is my favorite one. My picky Husband approves as he loves front pocket wallets.
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Reviewed in the United States on July 2, 2025
A
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Amazon Buyer
Dallas, US
★★★★★ 4
Close, but no cigar
Color: Pop Color - Navy/Red
Most of the features I wanted. Not quite as slim as I though and the mag money clip does hold enough bills, at least for me. I will use it for a while.
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Reviewed in the United States on September 14, 2024
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Katherine
Birmingham, US
★★★★★ 5
Linda cartera con pisa billete!
Color: Pop Color - Navy/Red
Está muy linda y se siente de muy buena calidad. La compré para regalo a mi esposo y quedó encantado. Si quieren regalar un detalle a un chico de buena calidad, se las recomiendo.
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Reviewed in the United States on January 16, 2026

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