This is a Bearing Pad Kit by Miller Industries. It includes all the partsneccessary to replace the wear pads on a 26′, 28′, & 30′ 20 Series Steel CarCarrier. See Features for a list of parts that are included. (12) 12-0306021 5/16″x1 3/4″x47 3/4″ Bearing Pads (60) 12-0403009 1/4-20×1″ Hold Down Screws