Pair with invisible selfie stick(not included), hold the selfie stick tightly and do not directly connection to 1/4" port at the bottom of the selfie stick for more reasonable stress Powerful clamping, and essential stabilizing accessory for high-intensity sports photoshoots Compatible for 360 70cm, 85cm, 114cm and high-strength invisible selfie sticks Suitable for selfie sticks with a diameter of 22mm-25mm All alloy, with a circular structure designing and build-in nonslip pad, it is stable