This is the Kyosho Perfex KS4031-06W Metal Gear Servo. This is the replacement steering servo for the Kyosho MP9 ReadySet and MadForce Krusier 2.0, but is a good low cost alternative for any application that could benefit from a plastic gear servo with 83oz-in of torque. Package includes three servo horns, rubber grommets and horn mounting hardware.

Specifications:
Torque: 83.32 oz-in (6kg-cm)
Speed: 0.15 @6.0V