TCT Adjustable

A TC tipped countersink/counterbore which fixes onto a standard drill between 3.0mm and 7.0mm diameter (drill not included). When fitted to the 3.0mm drill a 10.4mm counterbore will be cut, whilst on a 7.0mm drill the couterbore will be 14.7mm.
Two allen screws are used to clamp the cutter onto the drill at the desired position. The cutting edges should be aligned with the flutes of the drill.