SMARTSTANDARD sliding barn door hardware is made of solid steel with fine black powder coated surface. It can ensure anti-corrosion and years of beauty and longevity. Door weight capacity: 220 lb; fit for door width up to 42; fit for door thickness from 1 3/8” to 1 3/4”. The superior quality bearing has been passed the test of opening – closing for 100,000 times to ensure the stability and fluency of the move. A classic barn door not only saves space, it also allows the ability to open up multiple rooms without the annoyance of a swinging door. Each kit comes with all necessary hardware as you see in the pictures, including 3.5FT Rail2, Rail Spacers5, Rollers2, Door Stops2, End Caps2, Floor Guide1, Door Handle1, Hex Key1, screws and bolts. Suitable for 16 inch stud. TRACK AND HARDWARE ONLY, DOOR NOT INCLUDED. Professional Step-by-step instruction and customer service team help you solve all installation problems in time. With 1/3 of the market price, you can get the same quality products here! Premium quality hardware kit are provided along with a completely turnkey experience.