1.Suitable for motorcycle/bike handle bar or anything with a round bar, such as a scooter, a pushchair. Compatible with Gopro Hero 13 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 mouldedin 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 2050mm diameter or tube. We recommend 3540 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.