Packaged with 20pcs black welded hinges,heavy duty hinge ball bearing upgraded design is more long-lasting and stable than traditional flat hinges to meet the needs of projects. The door hinge is 3.2 inches in length,with a hinge on one end of the removable hinge and a hole fixing plate on the other.Allowing you to install easily,you can enjoy 360°rotation after welding,less friction,smoother and quieter operation. Weldable hinges is made of solid and high-quality carbon steel,and the is treated with rust and prevention to excellent strength and wear resistance,which can extend the service life of the door hinge. The gate hinge can rotate freely.Whether it rotates along the horizontal or vertical ,the weld on hinges can easily open and close the door,window or other objects . Weldable door hinges are suitable for designing and repairing revolving doors. Hinges designed for types of doors such as swing doors,drive doors,car ramps,glass doors, or outdoor doors.Perfect for DIY enthusiast,aintenance personnel,construction workers or mechanical engineers. Color:As Shown Material:Carbon Steel Package Contents: 1set * Detachable Door 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.