This is a Bearing Pad Kit by Miller Industries. It includes all the parts necessary to replace the wear pads on a 2010 or newer 19' & 21' 10 Series Steel Car Carrier. See Features for a list of parts that are included.
(2) 12-0308928-16 5/16"x16"
Subframe Bearing Pads
(2) 12-0308928-66 5/16"x66"
Subframe Bearing Pads
(2) 12-0308928-96 5/16"x96"
Subframe Bearing Pads
(36) 15-81007 1/4-20x1"x82 Deg Torx Scres
(2) 12-0306009 5/16"x1 1/4"x60"
Bearing Pads
(12) 12-0400088 Miller Screw, Stainless Steel, 5/8" x 1/4"-20