XIANQI Made of rugged stainless steel, made of precision, high strength, not easy to rust. Door Hinges antirust treated surface ensures excellent anticorrosion, firmness and durability Mute: under the action of lubricated ball bearing, no noise will be produced when opening or closing the door Ball bearing hinges have always been very popular for their smooth operation, . Suitable for standard internal residential doors, a pair of hinges is adequate Applications: the hinges with 8 mounting holes can be tightly installed on the door, can also be used for cabinets, doors, windows, cabinets, tool boxes, etc. specification: Name: Door hinge Size: 4" 3" Thickness: 3 mm Material: Stainless steel Color:Black Package Included :door Hinges and Screws. Bearing capacity up to 45 kg per pair. Installation method: slotted installation Instructions: Just fix it where it needs to be installed, align the screw with the hole and screw it into the frame to fix it. Product includes: 2 x door hinges