Halo Hex Key Bolt-On Skewers. Features: Non-quick release design for added security Alloy anchor nut includes Anti-Spin tab which prevents unwanted turning of nut when tightening or loosening the hex through-bolt XL version compatible with thicker dropouts (up to 10mm thick) Torque to 7 Newton meters (Nm) Specs: Shaft: XL CrMo Wheel: front/rear Spacing: 100/135mm Color: black Weight: 75g/set