1/2 Inch Shank Router Collet Extension Chuck Accepts 1/2-inch Shank Bits Extends The Router Bit an tional 2-1/4

Shank Diameter: 1/2 (12.7mm). Eliminate the dangerous temptation to remove the shank from the chuck extending the drill to provide the full depth of cut. . Let you work better be more efficient and process products more durable. . Let you process products more efficiently suitable for woodworking trimming milling machines engraving machines