This is the Hitec HS-225MG Precision Mighty Mini Ball-Bearing Metal-Geared Servo. This servo has the universal connector, and it will work with all current JR, Hitec, Futaba, and Airtronics Z radio systems and wiring.
The HS-225MG series represents a good value with performance that rivals other larger and more expensive servos. Ideal for applications that call for a small, lightweight, high speed, high torque servo, the HS-225MG high performance mini servos feature a top ball bearing and they are built with state-of-the-art SMT technology.
INCLUDES: One HS-225MGS metal gear micro servo, Four screws, grommets, and eyelets, Three servo arms, and one wheel
SPECS:Size: 1.27" x 0.66" x 1.22"Torque: 54.15 / 66.65 oz.in (4.8v/6v)Weight: 1.09 oz