12mm 12 5mm 13mm od 300mm length hss w4241 hrc61 63 jobber drill bit boring out round cnc cutting turning lathe tool bar rod
12mm 12 5mm 13mm od 300mm length hss w4241 hrc61 63 jobber drill bit boring out round cnc cutting turning lathe tool bar rod
25PCS HSS drill bitsDrill bit size:1-13mm/0.5mmSame as BOSCH qualityFully ground flute,135° selt-centering split point, high quality M2 high speed steelPacked by plastic box