Fast Shipping 5/16″ Stub Drill Bit Cobalt Split Point D/ASTCO5/16 (12 / Pkg.)

A 12-piece set of 5/16 inch cobalt split-point stub drill bits. Designed for metalworking tasks that require precise starts, reduced wandering, and durable performance when drilling through harder metals.

Specs

Set contents: 12 pieces

Diameter: 5/16 inch

Tip: Split-point

Length: Stub

Material: Cobalt alloy

Features

Split-point tip reduces walking on initial contact for accurate hole starts without needing a center punch.

Cobalt alloy construction offers improved heat resistance and wear resistance compared with standard high-speed steel, extending bit life in harder metals.

Stub length provides added rigidity and control in tight spaces and setups where longer bits would flex.

Designed for metal drilling, including tougher alloys commonly encountered in fabrication, automotive, and machine shop work.

Physical

: 12-piece set

: 5/16 inch

: Split-point

: Stub

: Cobalt alloy