Drill Bits Set with ring [Auto]
Top diameter size = 3.17mm
Bottom tip diameter size = [ 0.3mm - 1.2mm ] , [ 1.1mm - 2.1mm ] , [ 2.1mm - 3.0mm ]
Profile = Cylindrical
Top diameter size = 3.17mm
Bottom tip diameter size = [ 0.3mm - 1.2mm ] , [ 1.1mm - 2.1mm ] , [ 2.1mm - 3.0mm ]
Profile = Cylindrical