1.Suitable for motorcycle/bike handle bar or anything with a round bar, such as a scooter, a pushchair. Compatible with Gopro Hero 12 11 10 9 8 Insta 360 X4 X3 Ace Pro and other 1/4" thread connections. 2.With 360 degree rotation, you can change the angle of it. The ball joints use moulded-in rubber coatings, just require relatively little tightening force to securely lock the rocker arm in position. It can fits into a recess in the handlebars and holds firmly in place. 3.Fits handlebars mount with 20-50mm diameter or tube. We recommend 35~40 mm is the maximum diameter of the tube, it can be reasonably fixed on the tube. 4.Made of aluminium alloy & stainless steel materials, it will more solid, secure and strong. When tightened up, it is a very sturdy and secure clamp, don’t worry to move. 5.Come with Motorcycle mount *1, Thumbscrew*1, Action camera adapter*1