| Hand Light Holder Bracket Allows You to Install Different Types of Lights! You can attach the light and it can be attached to your wrist or elbow. It wraps around your hand over your thumb, so you dont have to worry about it falling off. The internal structure is well made. Lights not included. Please note: Can be installed with lights from 0.8 to 1.4 inches (20 to 36 mm). Specifications: Can be used in a variety of situations, such as diving, fishing, work, and everyday activities. Since the light is placed on the 2 mandrels, it is designed to be very difficult to slide around. No need to worry about sudden light falling off. Note: Please allow 1-2cm error due to manual measurement. Please allow little color deviation due to different computer monitors/cell phone settings.