RUKO HSS 6-Piece Countersink Set 6.3 To 20.5mm

This is a RUKO countersink set consisting of six HSS countersinks in nominal sizes: 6.3, 8.3, 10.4, 12.4, 16.5 and 20.5 mm.

Pros:

• Suitable for countersinks in steel, cast steel alloys and non-alloys (<900 N/mm2 tensile strength), thanks to the HSS cutting material
• Burr-free and zero chatter countersinking
• Good centering and chip removal
• Use low cutting speeds for the best results