G1 4LB Professional Rock Tumbler Kit for Adults

• Designed for Rock Tumbling Enthusiasts — Ready to process larger batches? Whether you're upgrading from a 1–2 lb tumbler or choosing a professional-grade setup from the start, this 4LB Heavy-Duty Metal rock polisher is built for adults, hobbyists, and collectors who tumble regularly. Combines precision control, heavy-duty metal base, and brushless motor performance to deliver consistent results through every polishing stage. Ideal for agates, jasper, tiger eye, quartz, and other popular tumbling stones. Backed by US-based support and fully replaceable parts.
• Built To Last with Brushless Motor & Heavy-Duty Metal Base — Unlike traditional brushed motors that generate heat, carbon dust, and performance loss over time, the advanced brushless motor delivers stable power with reduced heat buildup for extended tumbling cycles. Combined with a reinforced heavy-duty metal base, this metal rock tumbler provides improved stability, reduced vibration, and long-term durability. Trusted by over 1 million users across KomeStone brushless rock tumbler models.
• 75% Quieter 4LB Rubber Barrel with Large-Batch Capacity — The 4 lb rubber barrel gives you 4× the capacity of a standard 1 lb barrel, letting you polish larger batches in fewer cycles. Its thick tire-grade rubber construction absorbs vibration and reduces noise by up to 75% compared to plastic barrels — comparable to a running dishwasher — for a comfortable tumbling experience in garages, hobby rooms, and workshops. Handles agates, jasper, tiger eye, quartz, sea glass, and most popular tumbling stones across extended multi-day polishing cycles.
• 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 Start Polishing: Everything needed to begin tumbling right out of the box. Includes a 4LB rubber barrel, premium rough gemstones, 4-stage silicon carbide polishing grit set (4 bags), 2 spare drive belts, jewelry findings, mesh strainer, screwdriver, and a full-color instruction guide. Whether you're upgrading from a smaller tumbler or starting a new project, this complete kit helps you achieve professional-quality polishing results from day one.
• 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. This 4LB Heavy-Duty Metal rock tumbler isn't a one-season purchase. It's a permanent part of your hobby setup.
• Long-term tumbling under heavy loads can cause natural wear on belts over time. Reach out to our support team to request 5 extra belts — absolutely free.
• Our US-based customer service team offers 24/7 hassle-free replacement or refund support — we've got you covered.
• KomeStone – Built for Rock Tumbling Enthusiasts in the U.S.: From the popular K1 series to upgraded brushless motor models, KomeStone focuses on dependable performance and user-friendly design. Our lineup covers different needs: K Series — K1, K1 Pro, K2 Elite (low-noise), K4 (dual-barrel), K5 (beginner-friendly); G Series — G1 (4LB), G2 (8LB), G3 (22LB heavy-duty). We also offer a complete multi-stage grit system. KomeStone is committed to reliable tools and ongoing support for rock tumbling hobbyists.

Specifications

• Age Range Description: 13 years and up
• Number of Packs: 1
• Set Name: KomeStone Rock Tumbler Kit: Metal Series #G1
• Item Highlight: Brushless Rock Polisher, Heavy-Duty Metal Base, 3 Speeds, 9-Day Timer, Memory, Complete Kit for Rock Hobbyists & Collectors
• Unit Count: 1 Count
• Manufacturer recommended age: 13 years and up
• Educational Objective: Teaching geology, creative design, patience
• Operation Mode: Manual
• Indoor Outdoor Usage: Indoor
• Theme: Professional-Grade Rock Tumbling
• Color: 4lb: Single Barrel
• Subject Character: Professional-Grade Rock Tumbling