Max open clamp is 55mm Total length of the clamp: 108mm Total width of the clamp: 98mm (when the clamp is open) Working voltage: 4.8-6V (when the clamp is open) The board kit is very light Compatible with HS322, HS422, MG995, SG5010 servos Specification Name: Aluminum robot arm clamp 2 DOF DOF: 2 Leg material: aluminum alloy Leg weight: about 68g (without motor) Maximum opening angle of leg: 55 mm (without extension card when the maximum opening angle spacing is 55 mm, the largest extension card after installation is 95 mm) Total length of the claws: 108mm ( total maximum length when the tab is closed) Total width of the claws: 98 mm (maximum total width of the open tab)