Description: Adopting anodized technology, so the screw strength is high. It will not east to fade and oxidate while it has excellent corrosive resistance. Undoubtedly, our product is light in weight, which it is easy to carry and install. And it also will not easy to slide and deform because it has uniform force. It is made from aluminum alloy, is durable to use. There are two sizes of the product to choose from. Our product is suitable for bike. Item Name: Chainring Bolts Material: Aluminum Alloy Features: High Hardness, Corrosive Resistant, Ultra-light The whole vehicle is about 5PCS/Set, please pay attention to distinguish the specifications. Color: Black, Gold, Red, Green, Blue How to use: Fix one end of the plate nail with a plate nail wrench, and then use a 5mm Hexagon wrench to remove or install it from the other end. Size Details: Single Plate Nail, Thread M8 Screw Height: 9.5mm/0.37", Nut Height: 6.5mm/0.26''(Approx.) Double Disc Nail, Thread M8 Screw Height: 9.5mm/0.37", Nut Height: 8.5mm/0.33''(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: 10 x Chainring Bolts