The contractor grade 10000 GVWR equipment trailer adds premium components over the standard duty version. These additions include premium radial tires, 7,000 lb. drop foot jack, 2 5/16″ adjustable coupler, 16″ cross-member spacing, rubrail, a toolbox with lockable lid, and a US made sealed modular wiring harness with rubber mount LED lights. All these additional features are less expensive in this contractor grade equipment trailer package than if purchased separately.