MJR Tumblers Rock Tumbler Grit Kit Refill for 3lb Tumblers, 4 Step Silicon Carbide & 12,000 Grit Aluminum Oxide Polish | Rock Polishing Kit

• COMPLETE 4-STAGE ROCK POLISHING SYSTEM: This refill grit kit includes all four essential stages of rock tumbling—coarse (60/90), fine (120/220), pre-polish (400/600), and ultra-fine 12,000 grit aluminum oxide polish. Designed to guide stones from rough surfaces to a smooth, polished finish.
• 12,000 GRIT ULTRA-FINE POLISH FOR FINAL FINISH: The included sub-micron aluminum oxide polish is designed for the final stage, helping bring out a smooth, refined surface. Ideal for achieving a clean and polished appearance after shaping and smoothing stages
• PRE-MEASURED FOR 3LB TUMBLERS – EASY TO USE: Each stage is pre-measured specifically for 3lb rock tumblers, simplifying the polishing process. Just add the contents at each stage and let the tumbler do the work—no complicated measuring required
• COMPATIBLE WITH ROTARY & VIBRATORY TUMBLERS: Works with most rock tumblers, including rotary and vibratory models. A versatile grit refill option for maintaining your polishing workflow or restocking supplies.
• USA OWNED BRAND WITH QUALITY MATERIALS: Offered by a USA-based, disabled and veteran-owned company. MJR Tumblers provides reliable rock tumbling supplies designed for consistent performance and ease of use.

• Add Coarse Grit — Pour the coarse stage into the tumbler, run for 10-15 hours to shape stones.
• Progress to Fine & Pre-Polish — Replace with fine and pre-polish stages, tumbling each for 10-15 hours for smoothness.
• Apply Final Polish — Add ultra-fine 12,000 grit aluminum oxide, run for 10-15 hours for a glossy, refined surface.

Typical situations where MJR Tumblers Rock Tumbler Grit Kit Refill for 3lb Tumblers helps — illustrative scenarios, not customer reviews.