CE Smith 8 x 6.5" Tapered Spindle Trailer Hub Kit The CE Smith Trailer Hub Kit is designed with pre-greased bearings. cutting down on the mess by producing a final installation onto the axle. The hub kit is made of a galvanized material making it durable in marine environments. The kit includes a dust cap, cotter pin, and lug nuts.Specifications: 8 stud x 6-1/2" bolt circle diameter; 1-3/4" tapered to 1-1/4" shaft; 3500 lb capacity; 16" maximum wheel size; 2.71" hub inner diameter; 8-1/2" wheel flange diameter; Features: Dust cap; Cotter pin; Lug nuts;