- Rotary/percussion masonry drill bit 130° Douglas form carbide tip.- Shank diameter of drill bits 10-13 mm is reduced to 9.5 mm.- Shank diameter of drill bits larger than 13 mm is reduced to 12.7 mm. Technical details
- Precision ground twist drill for rapid drilling, long life and excellent concentricity.- Manufactured from High Speed Steel to DIN338.- Ground from solid stock right hand cutting, type N flute, precision ground at 118° point angle.- Di
- Precision ground twist drill for rapid drilling, long life and excellent concentricity.- Manufactured from High Speed Steel to DIN338.- Ground from solid stock right hand cutting, type N flute, precision ground at 118° point angle.- Di