The NiteRider Adjustable Angle Tail Light Strap Mount was specifically designed for our flagship tail light, the Sentinel. It allows you to fine-tune the mounting angle of the light to display the projected Laser Lanes even and parallel on the ground. It's an easy on and off non-slip tail light mount that also features a grooved contact pad that makes this the 'go to' mount for riders using aero seat posts. System Compatibility - Sentinel - Solas - Sabre - CherryBomb