Sutton Tools Heavy Duty Cobalt jobber drills are industrial quality for drilling materials that have high hardness and tensile strength such as cast iron, bronze, hardened steel & stainless steel. These drill bits feature a thick core for increased rigidity in hard materials.
Sutton Tools Heavy Duty Cobalt Drill Bit
Diameter (mm): 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm
Flute Length: 33mm (for 3mm), 43mm (for 4mm), 52mm (for 5mm), 57mm (for 6mm), 69mm (for 7mm), 75mm (for 8mm), 81mm (for 9mm), 87mm (for 10mm), 94mm (for 11mm), 101mm (for 12mm)
O/A Length: 61mm (for 3mm), 75mm (for 4mm), 86mm (for 5mm), 93mm (for 6mm), 109mm (for 7mm), 117mm (for 8mm), 125mm (for 9mm), 133mm (for 10mm), 142mm (for 11mm), 151mm (for 12mm)