Mactrem Tabletop Skater Dolly Car Wheel Camera Truck + 11 Inch Adjustable Friction Power Articulating Magic Arm Free to set straight or left or right direction no more than 45  to move Available to add Tilt, and the car plate designed with 3 standard 1/4 screw interfaceto install hand stents With Aluminum Black 11"universal arm One end can be connected to hot boot,The other end can be contected casually Adjustable at any angle Which only need to tighten the knob