GSR HSS-G (Ground). Drill set. Drill box made of steel plate. Supplied with standard drills for drilling steel, steel castings (alloyed and non-alloyed), cast iron, malleable cast iron and spheroidal graphite iron, etc. Bright finish. Tip angle 135 degrees. HSS-G with centre point for accurate centring and reducing axial forces. Measurements according to DIN 338.