Master Cobalt® 4/6 TPI Bi-Metal Variable Pitch Hole Saw is a premium line of professional quality.
Type: Variable pitch
Bit diameter: 1 in
Cutting length: 1 1/2 in
Material: Bi-Metal, high speed steel cutting edge
Includes: 1/4 in diameter x 3 1/16 in length pilot drill, 1/2-20 arbor
Teeth per Inch: 4/6
Positive rake teeth provides better chip clearance and variable pitch teeth reduces friction and heat
Reinforced tooth flank makes teeth stronger for longer life and resistance to tooth strippage, and the expanded gullets provide faster cutting and increased blade life