WIS series

        WIS-40 ... Light Duty Purpose,  Stainless Steel

        WIS-60 ... Medium Duty Purpose, Stainless Steel

        WIS-80 ... Medium Duty Purpose, Stainless Steel

  WI series

        WI-40, WI-60 ... Light Duty Purpose

        WI-80, WI-100 & WI-120 ... Medium Duty Purpose

        WI-150 ... Ultra Heavy Duty Purpose

  WIM series

        WIM-600 & WIMT-600 ... Medium Duty Purpose

        WIM-800 & WIMT-800 ... Medium Duty Purpose

  WLC series

        WLC-700, WLC-1000 & WLCT-1000 ... Medium Duty Purpose

        WLC-200 ... Light Duty Purpose

  WIP series

        WIP-200 ... Light Duty Purpose

  WCT series

        WCT-400 & WCT-800 ...Light Duty Purpose

  WXT series

        WXT-80 & WXT-100 ... Medium Duty Purpose

        WXT-125, WXT-150 & WXT-200 ... Ultra Heavy Duty Purpose

  WHMT series

        WHMT-75, WHMT-100 & WHMT-125 ... Hevy Duty Purpose Caster