Used to quickly remove cork or paper gaskets and Form-In-Place gasket material prior to assembly of power train components, engine blocks, heads, and valve covers. Attaches to 3M™ Disc Pad also available. 3 Inch x 1/4 Inch Shank. Disc pad connects quickly and easily to any power tool for 4 in discs while holding Scotch-Brite™ hook and loop surface conditioning discs securely and safely. Best used on steel parts.