Brute Force, Prairie, Actuator Collar, Pin and O-Ring. Fits All Years 2002 to Current Model. By Sgroi Innovations, LLC Part # 2005. Fits both the Sgroi Innovations Sure 4 Manual 4WD Mechanical Actuator as well as OEM Original Electronic Actuator. The Collar is made of a softer steel than the internal gears in the differential to prevent wear or damage to the gears. The Collar should be replaced when the edges or corners become to worn. Our package comes with the necessary pin and O-ring to complete the installation. This Collar and Pin fits onto the shaft of the Kawasaki Brute Force, Prairie, OEM Electronic 2WD 4WD actuator as well as our proprietary Sure 4 Manual 2WD 4WD actuator replacement kit. Full installation video on our site.