Place Order 15.50mm Reduced Shank Drill Bit Cobalt 1/2″ Shank D/AMMCO15.50
Original price was: $42.38.$22.04Current price is: $22.04.
For orders under $150.00, a shipping fee of $12.99 applies.
Specs
Diameter (cutting): 15.50 mm
Shank size: 1/2″ (12.7 mm) with reduced-shank design
Material: cobalt alloy high-speed steel (HSS-Co)
Quantity: 1 PC
Features
Cobalt alloy increases heat resistance and edge retention for drilling hard metals such as stainless steel and alloy steels
Reduced-shank design maintains the large cutting diameter with a compact shank profile
Enhanced wear resistance yields longer bit life under heavy-use drilling
Designed for consistent hole quality in harder metals with predictable performance across repeated drilling cycles
Ideal for fabricating 15.50 mm diameter holes in metalworking, automotive, and fabrication projects
Use with appropriate cutting fluid or coolant to maximize tool life and achieve cleaner holes
Physical
Shank: 1/2″ (12.7 mm) – reduced-shank configuration
Cutting diameter: 15.50 mm
Coating/material: cobalt HSS for high-temperature performance





