Hinge Is A Mechanical Bearing That Connects Two Solid Objects, Typically Allowing Only A Limited Angle Of Rotation Between Them. Two Objects Connected By An Ideal Hinge Rotate Relative To Each Other Around A Fixed Axis Of Rotation, Preventing All Other Translations Or Rotations, And Therefore A Hinge Has One Degree Of Freedom. Hinges Can Be Made Of Flexible Material Or Movable Components. In Biology, Many Joints Function As Hinges, Such As The Elbow Joint. Metal Fabrication Welding Is The Creation Of Metal Structures Through Cutting, Bending, And Assembly Processes. It Is A Value-Added Process That Involves Creating Machines, Parts, And Structures From Various Raw Materials. Specifications: Height: 0.99 Inches. Width: 3.61 Inches. Length: 1.12 Inches.