The Nocturnal Lights medium universal neoprene hand mount offers the ability to mount the light on the back of your hand for a hands-free diving experience. The adjustable strap allows you to comfortably strap the mount on the back of your bare hands and works with all neoprene gloves and dry gloves. This hand mount fits a Nocturnal Lights M220 lights or any other dive lights with a diameter between 1 3/8" to 1 5/8" and the kit comes with a clamp to secure the light and prevent it from slipping.