BAER Drill Set - HSS-E Drill Set for All Materials - 6-10mm (0.1 inc)Our twist drill bit are ideal for drilling a precise hole. The twist drill bit are particularly stable and made of cobalt alloyed high speed steel and retain their hardness up to approx. 600C. Profile ground cobalt drills with extremely high runout accuracy are suitable for drilling iron + steel and bronzes up to 1300 N mm as well as high strength CrNi based alloys and rust , acid and heat resistant steels, right with cylindrical shank according to