This adapter raises a 50mm square, 2-inch square hitch carrier by approximately 180mm. With the conventional product, we received many requests such as "Can't you make it a little longer because it interferes with the bumper?" Therefore, the hitch member side is made approximately 50mm longer. Please see the 4th image for dimensions. Please use this for hitch carrier use on low-floor vehicles. The bolts near the insertion opening are fixing bolts to prevent rattling. The material is steel. The distance from the center of the upper square pipe to the center of the lower square pipe is approximately 180mm. It can be used for both raising and lowering. Please note that the back door may interfere depending on the vehicle you are using. If you wish to purchase a stainless steel hitch pin, it is available for 1000 yen per pin only when purchased at the same time. We will provide a rattle prevention fitting (same color as the lift adapter) for the hitch member and adapter for 1500 yen, so please let us know after winning the bid. It is matte black painted and is a new, unused item, but it is not a beautiful paint job with scratches and uneven paint, so please refrain from purchasing if you are concerned. We are not responsible for any injuries or accidents caused by using the product. No claims or returns are accepted. We cannot give a precise answer regarding the strength because we have not performed a strength calculation. The material used is 4.5mm thick for the side inserted into the hitch member and 4.2mm thick for the side that attaches the hitch carrier, so you can use it as a guide by comparing it with the thickness of the steel material of the hitch carrier you plan to use. Thank you for your consideration.