Made of hard steel, durable and break-free, rustproof and easy to install. Suitable for BMX bikes, cruiser, electric bikes, folding bikes, hybrids, mountain bikes, etc. Lightweight operation and smooth movement, quick assembly of the multi-clamp. Can reduce the risk of damage to the lower fork after the collision and chain abrasion. It features stable front-end variable-speed performance and a narrow non-slip flat design. Features: Lightweight operation and smooth changeover, quick assembly of the multi-clamp collar. Made of hard steel, durable and not broken, rust resistant, easy to install. It features stable front-end variable-speed performance and a narrow non-slip flat design. Can reduce the risk of damage to the lower fork after the collision and chain abrasion. Suitable for BMX bikes, cruiser, electric bikes, folding bikes, hybrids, mountain bikes, etc. Features: Material: steel. Color: black. Dimensions: approximately 10.5 cm. 10 Steel Crash Resistance Durable Outdoor Replacement Parts Convenient Universal ATV Portable Accessories (Pull Down)