Mini-Wing inside ring buffs are engineered for finishing and polishing the inside of rings, as well as any other polishing application in your shop. Each buff features a center core made of Scotch-Brite material from 3M, with vertical flaps of aluminum oxide coated sandpaper evenly spaced around the circumference. The result is a two-stage action in a single tool: the sandpaper cuts and smooths the surface, while increased pressure engages the sponge-like Scotch-Brite core to leave a beautiful final finish.Mounted on 3/32" shafts, Mini-Wings are designed for use at slow speeds of 5,000 rpm or less. They work dry — no water or polishing compounds required — and are suitable for use on both non-ferrous precious metals and ferrous metals.Features Dual-action design: aluminum oxide sandpaper flaps cut and smooth; Scotch-Brite core refines the finish Scotch-Brite center material from 3M Vertical sandpaper flaps evenly spaced around the circumference Ideal for polishing the inside of rings and other curved or confined surfaces Use dry — no water or compounds needed Compatible with both non-ferrous precious metals and ferrous metals Mounted on 3/32" shafts for use in standard flex shafts and rotary tools Operate at slow speeds: 5,000 rpm or less Made in Thailand Specifications Diameter 1/2" Length of Material 1-1/4" Shaft Size 3/32" Max Speed 5,000 rpm Abrasive Material Aluminum oxide coated sandpaper Core Material Scotch-Brite (3M) Compatible Metals Non-ferrous precious metals and ferrous metals Use Method Dry — no water or compounds Country of Origin Thailand What's Included One Mini-Wing buff in each of the following grits: 80, 180, 220, 320, 600, 800, 1200, and 1500 8 buffs total