KomeStone K1 Pro Quiet Brushless Rock Tumbler Kit for Adults & Hobbyists | Reliable 2.5Lb Rotary Rock Polisher, Long-Life Motor, Thick Rubber Barrel, Memory Function, Complete Gem Polishing Kit
Original price was: $75.95.$72.15Current price is: $72.15.
Price: $75.95 - $72.15
(as of Aug 02, 2026 16:07:39 UTC – Details)
Product description
The Professional Brushless Rock Tumbler Built For Long-Term Reliability 
KomeStone K1 Pro brings together brushless motor technology, smart controls, a quiet 2.5LB rubber barrel, and service-friendly components for dependable long-term hobby use. Built for smoother tumbling, less maintenance, and support you can rely on batch after batch.
Reliable Serious Hobby Rock Tumbler Supplies
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Customer Reviews
4.6 out of 5 stars 257
5.0 out of 5 stars 15
4.4 out of 5 stars 586
4.7 out of 5 stars 102
4.6 out of 5 stars 252
4.6 out of 5 stars 252
4.6 out of 5 stars 257
Price
$39.98$39.98
$29.98$29.98
$129.98$129.98
$149.98$149.98
$111.99$111.99
$209.99$209.99
$309.99$309.99
Motor
X
X
Brushless Motor
Brushless Motor
Brushless Motor
Brushless Motor
Brushless Motor
Settings
X
X
3 Speed / 9-Day Timer
4 Speed / 9-Day Timer
3 Speed / 9-Day Timer
3 Speed / 9-Day Timer
3 Speed / 9-Day Timer
Capacity
Weight 4 Lbs
Weight 1 Lb
3 Lbs Barrel
7 Lbs Barrel (3.5*2)
22 Lbs Barrel
8 Lbs Barrel (4*2)
22 Lbs Barrel
Applications
Rocks, Coins, Sea Glasss, Etc.
Rocks, Coins, Sea Glasss, Etc.
Rocks, Coins, Sea Glasss, Etc.
Rocks, Coins, Sea Glasss, Etc.
Rocks, Coins, Sea Glasss, Etc.
Rocks, Coins, Sea Glasss, Etc.
Rocks, Coins, Sea Glasss, Etc.
Target Groups
Kids & Adults
Kids & Adults
Kids & Adults
Kids & Adults
Kids & Adults
Kids & Adults
Kids & Adults
Cus*tomer Support
Phone & Email
Phone & Email
Phone & Email
Phone & Email
Phone & Email
Phone & Email
Phone & Email
Designed for Rock Tumbling Enthusiasts — For users who tumble regularly and want a machine built for long-term use. Struggled with motor instability on other tumblers? The K1 Pro’s brushless motor delivers consistent rotation and torque, batch after batch. Ready to upgrade from a K1 or starter kit? Whether you’re an adult, a teen, or the whole family is sharing the hobby together — the K1 Pro is the natural next step. Same quiet 2.5 lb barrel and familiar controls, now with a premium brushless motor built for years of regular use. Backed by US-based support and fully replaceable parts.
Long-Lasting Brushless Performance — Pioneered by KomeStone, the K1 Pro features a brushless motor rated for 40,000+ hours of operation. Without carbon brushes, the motor generates less heat, vibration, and mechanical wear — delivering smoother rotation and consistent torque from the first polishing batch to the last. The result is dependable performance across repeated cycles and seasons, making the K1 Pro a reliable foundation for an ongoing rock-tumbling hobby.
75% Quieter Rubber Barrel with 2.5 lb Capacity — Process agates, jasper, quartz, gemstones, sea glass, and most popular tumbling stones. The 2.5 lb barrel gives you 2.5× the capacity of a standard 1 lb barrel, letting you polish more stones per batch. Its thick rubber construction cushions rock impact and reduces noise by up to 75% compared to plastic barrels — comparable to a running dishwasher — for a comfortable tumbling experience in living rooms, garages, workshops, and hobby spaces.
Smart Controls with Pause, Resume and Settings Memory — Choose from 3 speed settings and program each polishing stage on the clear LCD screen with the adjustable 9-day digital timer. Pause the tumbler to check your stones, then resume without restarting your settings. Automatic shutoff stops the cycle when complete, while the memory function restores your settings after any power interruption — the perfect, hassle-free control system for serious hobbyists and collectors. Set your stage, walk away, and come back to perfectly tumbled stones.
Complete Rock Tumbler Kit for Every Polishing Stage — Includes the K1 Pro tumbler, a 2.5 lb rubber barrel, 1 lb of rough rocks in 9 varieties sourced from around the world, four bags of 60/120/150/1200 polishing grit, ceramic tumbling media, a mesh strainer, jewelry findings, 3 drive belts, and a full-color illustrated guide. No additional purchases needed — everything required to begin your first polishing batch is already in the box, with step-by-step instructions and practical tips to help you progress from rough stones to finished keepsakes.
Replaceable Key Parts for Long-Term Ownership — Core components are designed to be individually replaceable, not discarded. The motor, control panel, drive belt, rubber barrel, and metal lid kit are each available as replacement parts directly from KomeStone, with no planned end to parts supply. The K1 Pro isn’t a one-season purchase — it’s a permanent part of your hobby setup.
𝟗𝟎-𝐃𝐚𝐲 𝐌𝐨𝐧𝐞𝐲-𝐁𝐚𝐜𝐤 𝐆𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞 & 𝟏-𝐘𝐞𝐚𝐫 𝐖𝐚𝐫𝐫𝐚𝐧𝐭𝐲 — 𝐑𝐢𝐬𝐤-𝐅𝐫𝐞𝐞 𝐏𝐮𝐫𝐜𝐡𝐚𝐬𝐞 — Shop with complete confidence. Your K1 Pro is backed by a 90-day satisfaction guarantee and a 1-year warranty. Miss Amazon’s return window? Our US-based customer service team offers 24/7 hassle-free replacement or refund support — we’ve got you covered.
