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Rock Tumbler Grit Kit Refill for 20lb Tumblers, 4 Step Silicon Carbide & 12,000 Grit Aluminum Oxide Polish, Stone Polishing Kit for Rotary & Vibratory Rock Tumblers
✅ In stock
D
Grade
Analysis Confidence
88%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 25, 2026 3:12 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
😐 Weak Deal- 😐Verdict: Weak Deal. Marginal discount. Prices may drop further soon.
- 💰The current price sits right around what this item typically fetches.
- 🏷️The retail sticker price has been slashed by 57% — a steep markdown from the official listing.
- 📉No lower price has surfaced in the past twelve months, making this one of the standout deals in recent memory.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
3.64/28
Recent Value
0/22
Market Standing
7.66/20
Deal Strength
16/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
MJR Tumblers
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓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 20LB TUMBLERS – EASY TO USE: Each stage is pre-measured specifically for 20lb 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.
⚙️ Specifications
8.74 x 7.05 x 2.36 inches
3.75 pounds
B07F6YBMZC
4.5
See Top 100 in Toys & Games
4.4
No
MJR Tumblers
Package Dimensions
8.74 x 7.05 x 2.36 inches
Item Weight
3.8 pounds
ASIN
B07F6YBMZC
Manufacturer recommended age
8 months and up
Best Sellers Rank
See Top 100 in Toys & Games
Customer Reviews
4.5
Is Discontinued By Manufacturer
No
