Hexagonal Self Drilling Screw Set High Hardness Common Maximum Fastening Force Screw Self Drilling Accurate Thread For Wood Feature:1. High Hardness Material: Made of high strength, high hardness and durable good quality materials. Self-tapping and metal front screws2. Strong Engagement Force and Maximum Clamping: Accurate thread design provides strong engagement force for maximum clamping force. Used for Metal Self-Tapping Hex Screws3. Drill materials quickly: A self-drilling screw is an ordinary screw used for high-speed drilling in metal and wood, useful and practical4. Tip with cutting threads: there is a tip that acts as a drill and the sharpness of the cutting threads to touch the holes during installation5. Wide Applications: Self Drilling Screw is widely used in home and office hardware, wooden furniture, repair and invention, helps a lotSpecification:Item Type: Self Drilling ScrewMaterial: Stainless SteelColor: SilverSpecifications: 4.2x13mm+4.8x13mmApplications: Widely used in home and office hardware, wooden furniture, repair and invention Packing List:50 x Self Drilling Screw (4.2x13mm)50 x Self Drilling Screw (4.8x13mm) 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.