Countersink fi 20.5 mm in HSSC 66 HRC steel 90 degree angle

Countersink countersink fi 20.5 mm in HSSC steel 66 HRC angle 90 degrees - 1 cutting edge for countersinking, deburring, chamfering - diameter fi 20,5 mm angle 90 degrees - cylindrical holder fi 10 mm - chuck length 50 mm - smallest working diameter fi 4 mm Precision heavy-duty conical countersinks for making notchless conical countersinks. Designed for: machinable steels, cast iron, alloy steels, aluminum, stainless steels.