This is a genuine manufacturer approved replacement part designed for use with power handles. This is the gear cap for the motor. It is made out of rubber and it is sold individually. To complete this repair you would need a screwdriver.
This is an authentic replacement part that has been sourced from the original manufacturer to be used with attachment power handles and drills from Ridgid and Ryobi. The torx head screw is commonly used to fasten the two halves of the motor housing assembly. This screw is sold as an individual replacement part, please note the amount needed may vary based on the model of the tool.