The WidowXL Robot Arm is an upgrade to the InterbotiX WidowX Robot Arm! The WidowXL has all the resolution of the WidowX with higher power servos, 3D printed hardware for easy assembly, and an upgraded gripper with interchangeable gripper fingers allowing you to customize your grip! The MX series actuators provide a full 360 degree freedom of movement in the base, ultra-high resolution of 4096 positions, user-definable PID parameters, and extremely smooth interpolation. The hefty MX-106 shoulder & elbow servos give the WidowXL very strong lifting strength in a slim frame. If you are looking for greater lifting strength than the WidowX, this version has you covered.