BB 90 Degree Coated NC Spotting Drills
4PCS :3mm 4mm 5mm 6mm5PCS :3mm 4mm 5mm 6mm 8mm6PCS :3mm 4mm 5mm 6mm 8mm 10mm7PCS :3mm 4mm 5mm 6mm 8mm 10mm 12mm-It's not only as a center drill but as a chamfer tool as well .-For accurate spotting on Machines.-Precise drill positioning.-Short lengths and no body clearance make this a very rigid tool.-60，90，120 degree drill point.TiN coated HSS:-for mild steel and other soft metals.-Manual grinding.Solid carbide:-Spotting and centering work on NC and CNC machine tools. Suitable for use on steels, stainless steel, cast iron, plastic, brass.
Long Length of HSS:d3*100Ld4*120Ld5*120Ld6~16*150LLong Length of carbide:100mm
HSS:RPM:150~1100 Feed：0.06~0.2Carbide:RPM:650~2500 Feed：0.08~0.2
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