Set 12 pezzi punte per trapano filettatura viti placcate titanio gambo esagonale 1/4" HSS rubinetto M3-M10
M3 x 0.5mm pitch,M4 x 0.7mm pitch,M5 x 0.8mm pitch,M6 x 1.0mm pitch,M8 x 1.25mm pitch,M10 x 1.5mm pitch. 12PCS Hex Shank Tap Drill Bits. Type Hex Shank Tap Drill Bits. Shank 1/4" (6.35mm) hex shank.