Switch between drill functions in seconds with the FastFix interface, saving time and eliminating cost of dedicated, single purpose tools. The Festool FastFix Right Angle Chuck is the ultimate solution for close quarters hole or fastener placement. Drill or drive between studs, joists, cabinet or drawer spaces, or virtually any constrained space without switching over to a separate, dedicated tool. 1/4 inch hex drive with wire detent. Accepts Festool Centrotec or adjustable 1/2 inch chuck. Chuck rotates 360 degrees with 16 detents. Works with all existing and previous model Festool drills equipped with FastFix interface for toolless change of chucks.