Drill bit extensions attach to drill bits to extend the bits' reach and allow them to drill deep holes. The extensions connect to compatible drills and are commonly used in woodworking and construction projects.
Set-Screw Hex-Shank Drill Bit Extensions
These drill bit extensions have a set screw that is tightened to hold the bits in place in the extensions. They accept drill bits that have a standard hex shank, and they extend the bits' reach during drilling applications.
7/16 in Extension Shank Hex Size
Set-Screw Hex-Shank Drill Bit Extensions 7/16 in Extension Shank Hex Size, sorted by Overall Length, ascending