XMark Commercial Adjustable Speed Bag Platform XM-2811 Give your hand-eye coordination and boxing training a boost with the XMark Commercial Adjustable Speed Bag Platform XM-2811. The solid design holds the commercially rated platform steady while working the speed bag. The adjustability of the XMark Commercial Adjustable Speed Bag Platform XM-2811 helps you determine what height you need. Features: - Commercial grade 11-gauge steel construction - Ball bearing swivel - 1.5" thick wooden platform - Dimensions: 31.5" x 24" x 23.5" - Speed bag not included