Adapter reduces a 2.5" x 2.5" hitch receiver opening to 2" x 2". It can be nested with the RHXA2183 to provide a 3" x 3" to 2" x 2" reduction in hitch size. - Adapter stops when flush and holes are aligned - Slotted holes ensure fit - Cutout notch allows removal with a screwdriver or other tool - Dual e-coat and Powder Coat finish