ULTRA-LOW-PROFILE DESIGN REPLACES THE HINGE PIN TO CREATE BUMPERLESS PROTECTION FOR DOORS AND TRIM. NUK3Y DOORSAVER II IS SIMPLE TO INSTALL, LOOKS GREAT AND STAYS IN PLACE WITHOUT “WORKING UP.” 3 EASY STEP TO INSTALL: 1) REMOVE OLD HINGE PIN 2) DROP IN THE DOOR SAVER II 3) ADJUST TOP CAM UNTIL DOOR OPENS TO DESIRED ANGLE AND YOUR DONE! (INSTALLED OPTIONAL SCREW CAP) **package include one piece**