21' Single Axel Trailer. This was originally set up under a 20.6' Wellcraft sterndrive boat. It will hold a 18' - 19' boat with an outboard motor or a 19' - 21' sterndrive boat. The width is 80" outside chine to outside chine. The trailer will have good bearings, good lights, a good working winch, a tongue jack, and good tires and wheels.