Installation method 1. Standard transverse groove The installation process is not easy to appear sliding, which can make the installation tool fast and save time 2. Smooth without burrs The surface is flat and smooth without burrs. High quality, robust and durable manufacturing 2. Clear the wire The surface is smooth and the screw is deep, the teeth of the screw are sharp, the force is uniform and it is not easy to slide during the rotation. < p> 4.304 Stainless steel Nickel and chrome combination, acid and alkalis resistance, corrosion resistance, water resistance and rust Waterproof and rust Nickel and chrome combination, acid and alkalis resistance, corrosion resistance Deep thread The outer wire has a uniform step and a Clear texture, high occlusion and firmer Hardware warranty Stainless steel 304 is waterproof and anti-rust, longer and safer to use Quantity Delivery: M3 * 8 (100 pieces)