Quick change arbor system with 1/4" - 6.35mm hex quick lock shank comaptible with impact drills' 'Set of x6 sheet steel hole saws, x1 quick change arbor, x2 spare pilot drill and springs' 'Variable pitch teeth give reduced vibration and faster debris removal' 'slimline design reduces frictional heat build-up and prevents tooth burnout' '8% cobalt M42 steel increases durability and heat tolerance' Max 1.6mm sheet steel.
