Product Description: Name: Outer hexagonal self drilling M5.2 pointed/drill tail Material: Carbon steel Surface treatment: colored zinc Size: M5.2 Size description: The specs consist of d * L, such as M5.2 * 19 (thread diameter 5.2mm * size 19mm), except for head thickness. Available length: 19mm~125mm Explanation: The installation uses an 8mm hexagonal socket, that are paired with a water-proof pad to stop rust. Note: 1.Due to manual measurement, please allow slight errors. 2.Due to variations between assorted displays, the photographs might not mirror the actual colour of the item. 3.If you've any questions on the product, please be happy to touch us. We will provide you with a reply as soon as possible. 4.We not just do retail, But additionally do wholesale,If you want to buy vast quantity,please touch us.We will calculate the small print and provides you a reputable price. 5. Thank you a great deal on your support. Have a nice shopping!