The bicycle crankset chainring screw washers are essential for converting a single chainring to a double chainring setup. These washers are designed to fit perfectly between the chainring and the crankset, ensuring a secure and stable connection, they provide durability and reliability for long-term use. Ideal for mountain bikes and road bicycles, these washers help enhance your bike's performance and efficiency. Features -Color:Silver -Material:Aluminium -Size:1.30X1.30X0.20cm/0.51X0.51X0.08in -Easy upgrade: convert your bike's crankset from a single chainring to a double chainring effortlessly by simply replacing the screw washers, enhancing your riding experience -Secure and reliable: the screw washers firmly secure the chainring, preventing it from loosening and ensuring your safety during rides -Improved riding efficiency: the design of the screw washers allows for smoother rides, increasing riding efficiency -Wide application: suitable for various bicycle models, these screw washers meet different riding needs, making them versatile and practical -Durable and : made with high durability, these screw washers are built to last, providing longterm use without frequent replacements Package list: 10 x bicycle washers