uxcell 1mm 60 Degree HSS Center Drill Countersink Bit Lathe Mill Tool 10Pcs Product Name : Center Drill Bit;Type : Type A TipAngle : 60 Degree;Tip Diameter : 1mm Body Diameter : 4mm / 0.16";Overall Length : 35mm / 1.38" Material : HSS;Weight : 35g Package Content : 10 x Center Drill Bit1 x Case