3M Sponge Sanding Pad - 10 pc. Assortment Stone Setting Tools preserving the finish and integrity

preserving the finish and integrity of the ring's interior

Square hole profile for drawing square wire and rod

Hardened helical drive gears with special form for maximum drive

Supports consistent air pressure and performance

Suitable for soft non-ferrous metals up to 20 gauge thick

3M Sponge Sanding Pad - 10 pc. Assortment Stone Setting Tools preserving the finish and integrity3M Sponge Sanding Pads combine a flexible foam backing with permanently bonded aluminum oxide abrasive for long lasting, comfortable sanding and finishing. The soft sponge construction makes these pads easy on the hands during extended use, and the flexible backing conforms naturally to contoured and flat surfaces alike. Each pad measures 4 1 2" x 5 1 2", providing a generous working area for a wide range of metalsmithing and finishing tasks. This 10