Alloy Robot Servos Set - 10 Servos for Bittle/Bittle X/Nybble QSlim high performance Alloy Robot servos with fast and precise actuation to meet the demanding requirements of legged robotic walking joints and head panning We use high end coreless motors in the servo for instant reverse rotation and large output torque. The rated life span is longer than 100 hours of continuous walking. You may need this 10 servo set if you expect to have high usage, such as for teaching or researching quadruped walking robots. The