***** **********Best Quality Guranteed. *****in 1 DESIGN - Consist of different length arm, you can assemble any of them to make different combination with other mount as needed. *****FULLY COMPATIBILITY - Suitable for all GoPro Mount*****MATERIAL - Nylon*****LENGTH 68mm/88mm/108mm*****WHATS INCLUDED - 1 x Long Arm, 1 x Medium Arm, 1 x Short Arm, 1 x Long Thumb Screw, 2 x Short Thumb Screw