Extend the reach of an end mill. Sets screws hold the end mill in place.

A quick-change mechanism allows for fast bit changes. Attach to the shank of a drill bit to extend its reach.

Attach to the shank of a drill bit to extend its reach. Tighten the set screws to secure the drill bit in the extension.

These one-piece steel extensions attach to drill bit shanks for added reach into concrete and masonry. They resist deflection so the bit tracks straight at full depth. SDS-Plus shanks have two deep slots and two shallow slots for secure, wobble-free coupling with SDS-Plus-drive rotary hammers. The quick-change mechanism lets you swap bits without tools, reducing downtime between holes.

Access hard-to-reach places while machining—these extensions add length to drill bits, arbors, and other tools with a Morse taper shank. Also known as drill sockets.

Slide your tool in, then press firmly to seat it. To separate the tool from these extensions, use a Morse taper removal tool.

Steel extensions have a soft body that can be machined and then hardened for wear resistance. The tang is already hardened.

Hardened steel extensions resist wear better than steel extensions.