1、Sturdy Construction: Constructed of stainless steel, the door tune up kit is robust and sturdy, resistant to erosion and oxidation, strong enough to stand up to the test of time and repeated use. 2、Adjustable and Smoother Performance: The door roller tune up kit comes with adjustable top roller brackets and quiet rollers to assure smoother operating of your garage door. 3、Versatile Use: The complete garage door hardware kit is designed to be suitable for any style of door, catering various mounting needs, providing added convenience, saving your time and effort. 4、Complete Kit: The kit includes size 1, 2, and 3 hinges, rollers, wheels, wire ropes, handles, side latch lock, various garage door brackets, and installation screws, making installation a breeze. 5、Practical Design: The tune up hardware kit can be used to upgrade your garage door's performance, designed to reduce noise, improve smoothness, and extend the lifespan of your garage door.