Including Lockscrews, Clamps and Locating Jigs, we supply the entire range by Carr Lane used for and with Precision Drill Jig Bushings. Lockscrews being the most popular locking device for renewable drill bushings, Round, Round End and Flat Clamps as alternatives to Lockscrews, to be used with Socket-Head Cap Screws and Lockscrew Locating Jig as the precise tool for centerpunching holes.