Optional 1 Foot Tapered Platform Extension for standard Tri W-G parallel bars. Extension is exclusive to Tri W-G products. The extension features a 600 lb. weight capacity. Its steel frame is made of sturdy 10-gauge steel and has a height of 1.75". Finish of base can be either Pearl Grey (standard) or Porcelain (optional). Purchase only includes the extension and does not include the parallel bars.