4″ Rigid Hard Rubber Top Plate 3-1/4″ x 6-1/4″21HR40Top plate size and bolt hole configurations match industry specificationsMobility and durability combinationEconomically priced
4″ Rigid Soft Rubber Top Plate 3-1/4″ x 6-1/4″21SR40Top plate size and bolt hole configurations match industry specificationsMobility and durability combinationEconomically priced
4″ Swivel Hard Rubber Top Plate 4″ x 5″00HR40Top plate size and bolt hole configurations match industry specificationsMobility and durability combinationeconomically priced
4″ Swivel Hard Rubber With Brake Top Plate 4″ x 5″00HR40-BTop plate size and bolt hole configurations match industry specificationsMobility and durability combinationEconomically priced
4″ Swivel Soft Rubber Top Plate 4″ x 5″00SR40Top plate size and bolt hole configurations match industry specificationsMobility and durability combinationEconomically priced
4″ Swivel Soft Rubber With Brake Top Plate 4″ x 5″00SR40-BTop plate size and bolt hole configurations match industry specificationsMobility and durability combinationEconomically priced
