Bicycle Motorcycle Holder Handlebar Mount for GoPro Hero4 / 3+ / 3 / 2 / 1 / SJCAM SJ4000 / SJ 5000 / SJ6000 Suitable for smaller than diameter 3cm tube Diameter Tubes: about 2cm-3cm Strong and stable bike mount Designed to lock your GoPro camera securely on your handlebar with rock solid reliability Capture point-of-view perspective from vehicle; Great way to take shots of yourself or of people following you