BRAVO Ball & Lock Plate BR_LOCK.17mm ball mount that can be attached to anything you would like. Simply Drill a 1/8" hole in the location you want it. Insert screw and washer thats provided on the back side and screw on the Bravo ball. 3/8 wrench and Phillips head screw driver will be need to tighten firmly. To attach lock plate remove lock plate nut and insert over the bravo ball then snap on lock plate over ball. Then simply screw on the lock nut to the lock plate until tight. To adjust direction of lock plate slightly loosen nut.