The Injection Fob is a two piece plastic case that replaces the factory case that comes with the vehicle. For early year FJ Cruisers. Injection molded of high strength and impact resistant ABS plastic. Existing electronics, battery, buttons, and seal are reused (not included with purchase) and packaged into the new case. Instead of an annular snap fit, this design bolts together with socket head cap screws for a more rugged and straightforward approach. Robust key ring hole eliminates the common breakage of the factory fob. Includes panic button. Assembly requires 7/64" allen key (included). Made in USA.