Material: -duty welded hinge is made of steel, with a long-term service life of high strength and hardness. 500 pound load capacity. Smooth and silent: The welded detachable hinge with ball bearings can rotate 360 degrees, with low friction, smoother and quieter. Application: Male to female door hinges can be widely used for sliding door hinges, metal doors, swing doors, trailer ramps, , or anywhere that requires hinges. Easy to use: Weld the hinge pins to the outer frame or door/door, and then insert the welding pins to create a custom heavy-duty hinge. Colour:silver Material:steel Size:10cm x 23mm Package Contents: 8 x Weldable Hinges Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.