Using automatic thread rolling machine processing, the thread is dense and strong, it is stable during the tightening process, and also enhances the overall smoothness.Using anodized coloring technology, a protective film is formed on the surface to strengthen the surface hardness.Made of steel material, the screw is wear-resistant and durable.The length of the product is 1.2cm, the width is 1cm, and the thickness is 1cm.It is suitable for mountain bike, road bike, etc. The thread is deep so that the force is even. The thread teeth are sharper so that it is not easy to slip during the rotation.Item Name: Disc ScrewMaterial: Steel M5x9Features: Durable, Strong, Bicycle AccessoriesColor: Red, Golden, Blue, Green, Purple, Multicolor, Mix ColorSize Details: 1.2cm x 1cm x 1cm/0.47" x 0.39" x 0.39" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:12 x Disc Screws1 x Wrench