Hot Picks 1-1/8″ Reduced Shank Drill Bit Cobalt 1/2″ Reduced Shank D/ACO1-1/8

Specs

Bit diameter: 1-1/8 in

Shank: 1/2 in reduced shank

Material: Cobalt alloy drill bit

Quantity: 1 piece

Product style: Cobalt twist drill

Features

Cobalt alloy construction delivers improved wear resistance and higher temperature tolerance for metal drilling tasks, extending bit life when working with tough metals.

1/2″ reduced shank design maintains core strength while offering a lighter shank profile for versatile tooling setups.

Optimized for hard metals where standard high-speed steel bits wear quickly, helping maintain cut quality over longer drilling sessions.

Single-piece packaging supports quick replacement and streamlined inventory in shop workflows.

Best-use materials include steel, alloy steel, stainless steel, and cast iron for reliable performance across common metalworking projects.

Use cases cover fabrication, automotive repairs, maintenance work, and metalworking projects requiring larger-diameter holes.

Physical

Product type: cobalt drill bit (twist drill)

Bit diameter: 1-1/8 in

Shank: 1/2 in reduced shank

Material: cobalt alloy

Packaging: single-piece