Features: Adjustable according to the size of your helmet. Bring you a special experience of . Its quick release housing to attach to the base plate, mounted on your helmet Durable nylon strap is easy to install and remove The strap is adjustable FIT: For Hero 9/8/7/7/6/5/4 For SJ4000 SJ5000 SJ6000 SJ7000 M10 M20 SJ6 For 4K For H8 H8R H9 H9R W9 Compatible with all types of camera movement of the protection box camera Material: nylon colour: Black Package Contents: 1 x strap 1 x J-shaped base 1 x 360-degree rotating base 2 x screws Only the above package content, other products are not included. Note: Light reflection 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.