The product is made of high quality steel and is sturdy and durable. Product Size: Length: 34mm/1.34in, Thread Size: M10 The product is mainly used for V-brake systems and fits standard M10 frame post mounting dimensions. The products can be used for a variety of other bicycle components that require robust mounting hardware in addition to brakes. Package Includes:8pcs Bicycle V-Brake Post Screws Products: Bicycle V-brake post screws Material: steel Quantity: 8 pieces Color: black