SainSmart DIY Control Palletizing Robot Arm Model for Arduino UNO MEGA2560 (6-Axis DIY KIT) Feature: SainSmart is professional in electronics and provides high quality product and service. Simulate real palletizing robot arm structure PVC material, CNC processing Adopts MG996 55g metal gear servo 4pc Active joint bearing connection Dimensions: 6.1 x 4.6 x 3.7 inches Weight: 1.9 pounds Package Content: - 71 x M3X8 screw - 47 x M3 nut - 2 x U bracket - 5 x servo bracket - 4 x 9kg servo - 2 x 20kg servo - 6 x metal servo tray - 3 x U bracket2 - 1 x right-angled bracket - 3 x flange bearing - 1 x gripper