One standard aluminum hub cap and mounting gasket. Hub cap includes oil window, vent plug, and side pipe fill plug, mounting bolts not included. Die-cast from aluminum alloy to help dissipate heat, resist breaking, warping, and cracking. Bolt holes = 6, bolt circle = 5 1/2”, bolt hole size = 5/16”, fit = steer Replaces: Stemco️#343-4046 SKF️#1843 Approximate dimensions = flange OD 6 3/16" flange ID 4 9/16" height 2 5/16" Approximate net weight = 12 oz