This Rivet Nut Drill Bit Kit is intended to drill precision holes for installation of the EZ Claw hose management system for tractor-trailers. This kit includes a 1/4" high-speed steel drill bit for the pilot hole and a 17/32" high-speed steel drill bit for the finish hole. Each hole accommodates the 5/16 rivet nuts included with all EZ Claw mounting brackets. The drill bits are equipped with a non-marring HDPE stop sleeve to ensure accurate depth of the drill hole.