K1 Rock Tumbler Kit - 2.5LB Quiet Polisher for Adults & Kids

• Designed for Adults, Beginners, and Families — from rough stones to polished gems, create jewelry, displays, and keepsakes that are uniquely yours with this quiet, reliable 2.5 lb tumbling system. The complete kit features simple controls, a step-by-step guide, and replaceable components with US-based support, making it easy to start your first batch and grow into an ongoing rock-polishing hobby. An ideal gift for birthdays, holidays, and any occasion that kids, teens, and adults can all enjoy.
• 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 beginners and hobbyists alike. Set your stage, walk away, and come back to perfectly tumbled stones.
• Complete Rock Tumbler Kit — Ready to Unbox and Start on Day One — Includes the K1 tumbler, a thick 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.
• Step-by-Step Guidance for Every Level — The included full-color guidebook covers everything from initial setup to finishing your first batch — with detailed polishing techniques, troubleshooting steps, and practical tips like adding soapy water during polishing stages. Our US-based support team is also available anytime for polishing questions or machine help. Together, the comprehensive guidance and dedicated support help adults, beginners, teens, and families make real progress — from rough stones to finished keepsakes. Makes a complete geology or STEM gift for rock enthusiasts of all ages.
• 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 isn't a one-season purchase — it's a permanent part of your hobby setup.
• Our US-based customer service team offers 24/7 hassle-free replacement or refund support — we've got you covered.
• About KomeStone — A Brand Dedicated to Rock Tumbling. From beginner kits to professional-grade systems, KomeStone's full lineup of quiet, reliable tumblers is designed for every stage of your rock-polishing journey. The K1 is built with replaceable motor components, a thick rubber barrel, and responsive US-based customer support — a favorite among adults, hobbyists, and families who value consistent polished results, batch after batch, for years of dependable use.

Specifications

• Age Range Description: 8 years and up
• Number of Packs: 1
• Set Name: KomeStone K1 Professional Large 2.5LB Capacity Edition
• Item Highlight: Complete Rotary Gem Polishing Kit with Thick Rubber Barrel, 3 Speeds, 9-Day Timer, Pause & Memory, Ideal Gift for All Ages
• Unit Count: 1 Count
• Manufacturer recommended age: 8 years and up
• Number of Players: 1
• Educational Objective: Teaching geology, creative design, patience
• Operation Mode: Automatic
• Indoor Outdoor Usage: Indoor
• Color: Black
• Subject Character: Turn Raw Rocks Into Smoothy Gesm. Create Jewelry, Displays, Keepsakes, And Collectioons That Make Every Finished Stone Uniquely Yours.