Materials: 316 Stainless Steel Length: 5.7 cm/ 2.24 inch Width: 3.8 cm/ 1.5 inch Screw hole diameter: 5 mm/ 0.2inch Heavy duty, polished Universal boat accessories, door and window hardware etc. Package Includes: 4 Pieces Boat Door Hinge Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement. Light shooting and different monitors may cause the color of the objects in the pictures to be slightly different from the actual objects. The allowable measurement error is +/- 1-3cm.