Comparison : Item # 098D030K, Base for Swivel Feet, Nylon PA
Item # 098D040K, Base for Swivel Feet, Nylon PA
Item # 098D045K, Base for Swivel Feet, Nylon PA
Item # 098D080K, Base for Swivel Feet, Nylon PA
Item # 098D030ZSG, Base for Swivel Feet, Die-cast Zinc