Note: The color of the item may vary slightly due to photography and your own computer Specification: Color: Silver Shape: Hammer Head Material: Carbon Steel Thread Type: M3-M5 Total Size: 10.3x5x6mm Feature: 1.Made of high-quality carbon steel. 2.T-Nut with M3-M5 thread. 3.Suitable for European standard aluminum profile extrusion slot. Note: Since the measurement tools are different, there will be 1-3 mm error, not to be a basis/reason for return.