Min. Order Reference FOB Price
1 Piece US$7.00 / Piece
Product Description
36mm Tungsten Carbide 12 degree Taper Button Drill Bit for Rock Mining Description Our tapered button drill bit size from 32mm-42mm, tapered 7, 11 and 12 degree, with 4, 5, 6 and 7 buttons. Our thread button drill bit size from 33mm-178mm, include thread type H25, R25, R28, R32, ...