Thise Butt Hinge with Bearings is designed to disperse weight, compensating for heavier doors and increased use. For applications where extra strength is required. The integral nylon bearings promote rattle-free, silent movement and give the hinge a smoother action. Commercial ANSI template screw hole pattern. Constructed of corrosion resistant investment cast 316 stainless steel. Installs with eight 1/4" FH fasteners (not included). Sold per each.