Material: carbon alloy_x000D_Size: 3.5*3.2cm 11. Precise and smooth shape: The product has high dimensional accuracy and a smooth surface without burrs. The precise shape provides smooth clip-in and clip-out and ensures you can be confident on the toughest of spins. 22. Sturdy and durable: The cleats are made of solid carbon alloy material, which is lightweight and very durable. The cleats also feature a black block design that allows riders to switch the blocks to different height options to reduce noise. 33. Built for cycling: The cleats are fully compatible with all mountain bike systems. Unisex cleats are suitable for both men's and women's cycling shoes. 44. Built for better experience: We offer more accessories to meet your needs, so enjoy sports and sweat.