For countersinking in steel, cast iron, non-ferrous metals and certain stainless steels.

Ø6,3 + 8,3 + 10,4 + 12,4 + 16,5 + 20,5 mm
6 parts in plastic case
Cobalt alloy High-Speed-Steel
3 cutting edges
90° DIN 335 form C, right-hand cutting
Burr- and groove-free countersinking