Replacement rear axles that are lightweight, easy to use and look great- Button sliders are anodized caps for the non-drive side that stick out to prevent frame damage when laying the bike over. Available in several anodized colors- Trainer buttons attach to both ends of axle to allow fitment in trainers built around traditional QR end caps- Uses a captive steel washer under the head to reduce friction on the frame, transferring more of the tightening torque to clamping load for a stiffer interface as well as preventing sticking or galling when removed- Use a 6mm hex key for install and removal- See Wolftoothcomponents.com for full size measurement documents