Lezyne Rear Mount for Micro & Macro LED Lights is an easy tool-free fitting to seat post. Composite Matrix moulded cradle bracket snap-fits to light with a positive and secure fitting. The Multi-Position Silicon Strap makes it easy to move your light between bikes, or get an extra bracket for each bike. Can be mounted to rear of some helmets and other places on the bike like racks and stays. Fits Micro Drive rear LED.