This is a custom helmet mount that is not offered anywhere else online besides here. This helmet mount is made specifically for the Cree Powered LED Bike Light. The Securing Velcro Strap that is attached to the mount's base is 11" long. 

Compatible With: 

• Night Provision BX-300

• Night Provision BX-400

• Night Provision BX-500

• Night Provision BX-960