The Element WS-109 Hollow Rear Thru Axle is an advanced, lightweight, and durable component designed to secure the rear wheel of your bike. Built for use with the 12mm thru-axle standard, it’s compatible with mountain bikes, road bikes, and gravel bikes that use a rear thru-axle system. Featuring a hollow core design, this axle offers significant weight savings without compromising on strength, making it ideal for performance-focused riders