This speed chain tensioner for folding bikes is designed to keep your chain in place and prevent it from falling off. Made from aluminum alloy, it features an elliptical for smooth operation. Ideal for bikes enthusiasts who want to convert their folding bikes to speed, ensuring a seamless and efficient ride. Features -Color:Red -Material:Aluminum alloy, stainless steel -Size: 11.00X2.50X2.20cm/4.32X0.98X0.86in -Portability: easy to carry and store, making it for travel and urban commuting -Stability: provides stable and efficient chain transmission system, reducing the risk of chain drops -Safety: reliably keeps the chain in place during rides, offering a safer cycling experience -Durability: made from aluminum alloy and stainless steel materials, ensuring -Versatility: suitable for singlespeed bicycle chain replacement and maintenance Package list: 1 x Bicycle Chain Tensioner