These industrial Cleaning brushes are for Cleaning tubes ,sockets,barrels, bolt holes gun, almost all internal hole cleaning. The come in bags of 6 pieces 6mm-1/4'') (7MM) (8mm), (9MM (10MM) diameter. 1/4'' quick change hex shank., more than 100 available Different sizes and fill available available comtact seller (8MM,9MM,10MM,11MM,12MM,13MM,14MM,15MM,16MM,17MM,18MM,19MM NYLON,,STAINLESS STEEL, BRASS

Expedited shipping available