1.60-degree angle adjustment range, enable you to adjust direction of illumination. 2.The tube diameter is 25mm, suitable for most flashlight, with two bonus screws for mounting flashlight with larger diameter. 3.Made of material, sturdy and durable. 4.Easy to install on to helmet, suitable for fast helmet. 5. Prefect for and combat games, hunting, etc. Material: ABS Colour: Black Diameter: 25mm Applicable object: Suitable for flashlights 3cm diameter Package Contents: 1 x bracket Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.