This Premium motor plate was designed to offer the ability to turn engine 1.5 degrees using adjustable pills on the bottom adjusting slot. This eliminates wear seen on the edge of the belts caused by rubbing belt guides when under load. These plates can also can be set to run straight and can be used on Sprocket drives as well. Another awesome feature of the plate is the internal adjustment screw. No more bulky jacking screw sticking out near rear axle.