About this item 【Dimension】This 2’’ to 1-1/4’’ hitch receiver adapter fits 2 inch square trailer hitch receivers. Pinhole diameter: 0.66 inches, compatible with 5/8'' hitch pins. Please check whether the pin and pinhole are suitable before purchase. 【Universal Fitment】Suitable for a variety of cargo racks, bike racks, etc. Whether you need to tow cargo or install various racks, this receiver hitch adapter sleeve mount can easily meet your outdoor needs: 2 to 1.25 inch hitch adapter universal application for trailers, boats, campers, bike racks, cargo carriers, etc. 【Aluminum & CNC】Made of aluminum alloy with CNC precision cutting technology, this receiver adapter opening universal extender is strong and durable, offering excellent corrosion resistance for long-term use. 【Exhaust Groove Design】The concave-convex groove surface design increases friction and ensures a more stable connection, providing peace of mind during use. Product Package Dimensions: 6.1 x 3.15 x 2.44 inches.