The main body is aluminum, and the tip is made of resin parts, allowing for length adjustment (adjustable with an Allen key). Compatible with wheel diameters of 22-29 inches/700cc and 12mm thru-axle diameters. Since it has not been ridden, it is considered as "like new," but there is a dent that occurred when it was once attached to a road bike. Please check the photos. Price negotiations are not accepted. The resin parts will be removed and included, and it will be shipped via Yu-packet Post.