Slide plate allows foot throttle to be moved back and forward to match leg length of driver. For instance, if foot throttle is mounted permanently in the most forward position for a six-foot driver, then someone 5'6 or 5'* drives the boat, he or she can't comfortable reach the foot throttle without sitting on the edge of the seat. This is not only inconvenient but also unsafe. Slide plate can be Black Ceramic coated for appearance. Ceramic coat is extremely stong, good looking, and has amazing corosion protection.