This clever fixture makes it possible to use standard drill bits with an impact driver. One end of the Drill Bit Adapter is a 1/4" hex power bit shank, the other end is a collet specced to fit a certain size drill bit (see the “Specs” tab for decimal-inch sizing). Each size will safely fit a drill bit 1/64" smaller. The piece is heat-treated for industrial durability.
The Adapter Sets ship with drill bits installed, the single Adapters ship without drill bits.
The hex socket fits on the 1/4" bit shank, providing more meat to wrench on when you’re loosening a collet to change out the drill bit while protecting the shank.
Made in the USA
Size | Accepted Range |
1/32" | .025" - .040" |
1/16" | .047" - .062" |
5/64" | .065" - .080" |
3/32" | .081" - .096" |
7/64" | .095" - .110" |
1/8" | .111" - .126" |
9/64" | .126" - .141" |
5/32" | .144" - .159" |
11/64" | .158" - .173" |
3/16" | .174" - .189" |
13/64" | .189" - .204" |
7/32" | .205" - .220" |
15/64" | .223" - .238" |
1/4" | .237" - .252" |
9/32" | .268" - .283" |
5/16" | .299" - .314" |
3/8" | .362" - .377" |