This kit includes 2 HS-311 (or better) servos, SVM-01 and SVM-02 brackets, the SMT-02 universal sensor mount and other hardware to mount a sensor in a pan/tilt configuration. These will bolt right onto the front of our EFC kits as well as any other flat surface. This is one of the most affordable options for building a pan/tilt head. Buying these components together in a kit saves you money.