Hss cobalt drill bits 2 1.0mm ol34mm wl12mm irwin 10502509, the irwin metric hss cobalt drill bits are perfect for drilling stainless steel and other high alloys'. '.strtoupper('t')heir 135deg split point grinding ensures perfect centring and reduced drilling pressure'. '.strtoupper('a')n industrial quality ground flute ensures high accuracy drilling and fast removal of chips'. '.strtoupper('t')he drill bit body is manufactured from high quality hss steel containing 5% cobalt co'. '.strtoupper('t')he added 5% cobalt improves the red hardness heat resistance of the drill bit and results in significantly extended life'. '.strtoupper('i')t has an attractive golden tempered surface finish.diameter 2mm.working length 24mm.overall length 49mm'. '.strtoupper('p')ack of 2'. '.strtoupper('i')rwin® 10502509 hss cobalt drill bits 2 2.0mm ol49mm wl24mm