Features Adapted for SDS-PLUS Rotary Hammers. 4 cutter SDS plus drill bits suitable for masonry and concrete. Best in its class For more productivity and accuracy. For maximum impact and torsion forces as well as prolonged service life The drilling dust travels quickly from the drill head into the spiral flute Two elevations on the cutting edge, provide improved breaking performance in concrete and optimal reinforcement strength The drilling dust is removed faster, while at the same time ensuring low-vibration drilling and a high degree of fracture safety The wearing mark serves as an indication of the life of the drill bit. and a high degree of fracture safety Bit Dia (D)(mm) / 20 mm Overall length (L1) (mm) / 450 mm Working length (L2) (mm) / 400 mm