Steel cutting tool removes burrs from the outer edge of the forcing cone to improve accuracy. Use on the chamber throat to help rounds drop in easily. Eliminates lead shaving or "spitting" in one or two passes. Unique design works without disassembling the gun. 3/8" tool is ideal for .17 and .22 revolvers. " tool works on revolvers from .32 through .45. Revolver Deburring Tool includes cutter and handle. Cutters also sold separately and can be interchanged in the handle. Mfg: Brownells SPECS: Cutter: High speed steel, hardened. 3/8" (9.5mm) O.D. Handle: Aluminum, 3" (7.6cm) long.