Flights, paddles, and pushers are all different names for belt cleats on a conveyor belt. Cleats are upright profiles attached to the top surface of belts to increase load capacity on incline systems. Belt cleats come in different sizes, shapes, colors, and compounds. Generally, the cleat must be made of the same compound as the belt in order to achieve a good bond for long service life. There are two broad categories of compounds — rubber and thermoplastic.