Hiwonder Metal Picking Gripper for Robotic Arm and Robot DIYProduct Description Hiwonder metal picking gripper is compatible with Hiwonder robotic arm serving as a great tool for robotic arm to pick and sort the objects. Delicately designed, it can grab the objects steadily and firmly without falling. When the gripper is fully stretched, the maximum opening distance is 55mm. Gripper Features Material: hard aluminum alloy Maximum opening distance: 55 mm Size: 98 * 112 * 50mm Product weight: 67g (without servo)