US
12-in. Self-feed bit extension
DW1647

12-in. Self-feed bit extension

Professional contractors rely on DEWALT self-feed wood-drilling bits when they need to bore holes 1-in or larger for pipes, cables, and ductwork. Turn to this extension to enable work in hard to reach locations or for extra thick material. Extension body features hardened construction and a double set screw locking is designed to help prevent bits from falling out during demanding applications. Standard 7/16-in Quick-Change shank allows for fast bit changes in Quick-Change ready tools like the FLEXVOLT 60V MAX brushless cordless Quick-Change stud and joist drill (DCD471) while preserving backw

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Checked 29 Oct 2026

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Full specifications

Product TypeSelf-Feed Drill Bit
Individual or SetIndividual
Piece Count1
Product MaterialMetal
Application TypeDrilling
Assembled Product Length14.75-in
Assembled Product Width1.5-in
Assembled Product Diameter0.44-in
Assembled Product Weight1.15-lbs

Specifications as published by DEWALT.

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