Home / Toys & Games / K1 Pro Professional Rock Tumbler Kit for Adults, 2.5Lb Barrel | 75% Quieter Brushless Rock Polisher, 40,000-Hour Motor Life, Pause & Memory, Complete Gem Polishing Kit, Gift For All Ages

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K1 Pro Professional Rock Tumbler Kit for Adults, 2.5Lb Barrel | 75% Quieter Brushless Rock Polisher, 40,000-Hour Motor Life, Pause & Memory, Complete Gem Polishing Kit, Gift For All Ages

-10% $ 89 .98 $99.98

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200+ sold last month

Description

Designed for Kids, Adults and Rock Tumbling Enthusiasts Families — 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. 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.

We may earn commissions on qualifying purchases.

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A1 Pro Brushless Rock Tumbler Kit - Double Barrel for Large 8LB Capacity, Adjustable Speed & Timer, Durable Metal Base for Adults & Rock Collectors – Includes Full Accessories

-15%

$169 .99 $199.99

100+ sold last month

Lowest ever

Amazon

50000 Grit Aluminum Oxide Rock Tumbler Polish, Step 7 Ultimate Finish | Maximum Refinement for Rocks, Gems, Glass & Jewelry Making, Ultra-Fine Powder, 1 LB Refill, For All Major Tumblers

-10%

$36 .88 $40.98

Amazon

Rock Tumbler Grit and Ceramic Tumbling Media 4 Pounds, Polish Up to 25 lbs. of Rocks, 4-Step Polish Refill Media Kit, Compatible with All Rock Tumblers, Essential Polishing Kit for Adults

-14%

$28 .48 $32.98

300+ sold last month

Amazon

-13%

$12 .99 $14.95

Amazon

-10%

$44 .95 $49.95

Lowest ever

Amazon

Professional Rock Tumbler Kit,3-Speed Motor & 7-Day Timer | Includes Rough Gemstones, 4 Polishing Grits, Jewelry Fastenings, Operating Instruction, Great Stem Science Kit

-6%

$33 .99 $35.99

Amazon

-5%

$27 .53 $28.98

Lowest ever

Amazon

8000 Grit Aluminum Oxide Rock Tumbler Polish 5 LBS, Step 5 Final Refill | High Gloss Polishing Powder for Rocks, Gems, Glass & JeweFinishing, Large Refill for All Rock Tumblers

-5%

$43 .65 $45.98

Amazon

Rock Tumbler Grit Step 3, 600 Grit Silicon Carbide Fine Media Refill 5LB | Pre-Polishing For Rock Tumbling, Reduces Fine Surface Marks, Creates The Ideal Base For Step 4 Final Polish, Smoother Finish

-5%

$28 .48 $29.98

Lowest ever

Amazon

30000 Grit Aluminum Oxide Rock Tumbler Polish, Step 6 Ultra-Fine Polish | Advanced Refinement for Rocks, Gems, Glass & Jewelry Making, Ultra-Fine Powder, 1 LB Refill, For All Major Tumblers

-10%

$32 .38 $35.98

Amazon

-5%

$28 .48 $29.98

100+ sold last month

Lowest ever

Macy’s

Mindblown Motorized Rock Tumbler Set, Ages 8+

-50%

$19 .99 $39.99

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Amazon

SYNARRY Large Wooden Construction Vehicle Puzzles for Kids Ages 4-6 | Monster Truck Puzzles for Kids Ages 3-5, Christmas Birthday Gifts for Boys & Girls, Construction Toys, Screen-Free Play

-10%

$19 .79 $21.99

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-10%

$17 .99 $19.99

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-15%

$33 .99 $39.99

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-51%

$19 .97 $40.99

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Amazon

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-16%

$13 .99 $16.66

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Walmart

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-23%

$22 .99 $29.99