Tubular steel powder coated frame Heavy duty nylon base Axle mount arm 20` quick release alloy wheels 31.5` wide by 31.5` long by 9` deep Holds up to 120 lbs of cargo Extra hitch only - part# 98017 Extra hitch assembly complete - part# 98016 Steel Alloy 120lbsUPC/EAN/GTIN: 072774980147