This package comprises both sizes countersink: 5-13mm and 7-20mm.
These FISCH chatter and burr free snail countersinks are part of our Quick Change System and can be used either directly mounted into a drill chuck or used with any quick-change hex recess chuck, including Festool's CENTROTEC. They can be used on a wide range of materials including high grade steel, synthetics, wood and both alloyed and non-alloyed steels. The shank is hardened to DIN3126.E6.3. Made in Austria.