D4176 Cast-Iron Fixed Caster for D2058AThis caster features a cast-iron wheel with a heavy steel support bracket. Rectangular mounting pad has hole dimensions, center-to-center, of 2-3/4" x 1-1/2". 360 degree swivel. Capacity: 330 lbs. These are direct fixed caster replacements for our D2258A Shop Fox® Super Heavy-Duty Mobile Base.