This set contains everything needed to make a robotic arm complete with gripper to grasp objects. The package includes: 6 analog RC servos with metal gears, 1 robotic gripper, the metal parts to make the arm structure, 3 servo extensions (1 long 220 mm, 2 long 300 mm), 1 long spiral plastic sheath 1 meter and bundle cables, 1 cross screwdriver, 1 mini hex wrench, 5 metal servo hubs, 3 mini flange pads, screws and nuts for mounting. The various movements of the arm are made possible thanks to 4 RC servos with metal gears contained in the set, while another 2 servos allow you to open/close and rotate the gripper.

Technical features:

• Arm:
  Arm dimensions with gripper (mm):430x90x90
  Package dimensions (mm): 205x165x65
  Weight: 963 grams
  
• Pliers:
  Closed dimensions (mm): 108×80
  max opening (mm): 55
  
• RC Servo:
  Operating speed: 0.17s / 60 degrees (4.8V no load)
  Operating speed: 0.13s / 60 degrees (6V no load)
  Stall torque: 13 kg cm (180.5 oz-in) at 4.8 V
  Stall torque: 15 kg cm (208.3 oz-in) at 6 V
  Power: 4.8 to 6 V
  Metal gears
  Dimensions (mm): 40x19x43
  Weight: 56 grams

Video for assembly