Brownells .243 Winchester 400 Grit Chamber Hone

Abrasive silicon carbide balls polish rough or scored chambers smooth and friction free in only minutes. Helps cure sticky extraction for faster, more reliable cycling. Use Flex Hone Oil Only. View Flex-Hone PDF Here Mfg: Brownells SPECS: Fine grit silicon carbide abrasive, twisted steel shafts. Must be used with Flex Hone oil. .223/5.56 - 8" (20cm) long shank. .38/.357/.44/.45 - 14" (35.5cm) long shank. Instructions included.