Please choose what you need Type 1 Bracket without Metal Helm not include servos Type 2 Bracket with Metal Helm not include servos Type 3 Bracket with Metal Helm six MG996R servosType 4 Bracket with Metal Helm six DS3115 servosFeatures 6 DOF mechanical are widely used in teaching mechanical and DIY creative projects it can be seen as a simple multi degree of freedom of demonstration platform its power system consists of six servo motor composition can be achieved robot around up and down left and right grab handling demonstration Package includes 1 x DIY Mechanical Robot Arm Kit