The mirrored screws are made of CNC aluminium with anodised finish, strong and sturdy. After removing the mirror, the mirror bolt perfectly protects the mirror hole threads from water, dust and dirt. You can screw in the screws by hand, no additional installation tools are required. Easy to install. Minimalist design to make your motorcycle look more outstanding. Material: 6063 Aluminum, Anodized Finish. Color: red, black, blue, gold. Size: M10*1.5(10mm), M8*1.5(8mm). Thread diameter: 10mm/0.4 inches. Height: 15mm/0.6 inches. The package includes 2pcs mirror hole plug screws.