1 It is made from cold forged carbon steel with good welding properties. 2. Two separate components are easy to use, using welding tools to make nuts, easy operation, and high rigidity. 3 Typically used for part maintenance. 4 Note:As different shooting and differnent displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1 cm. Specifications: Product Name: Welding Nut Main Color: Silver Tone Material: Carbon Steel Grade: 4.8 Thread Size: 7/16-20 Total Size: 28 x 21 x 13 mm (L * W * H) Solder Joint: 1mm Package: 10 x Welding Nuts