505 - Skidtube - Float w/ Basic Wearplates - LHDARTs B505 float skid tubes are also constructed with patented I Beam technology, which combines the conventional round tube with the strength of the central I Beam. In DART Aerospace skid tubes, the central I beam web absorbs most of the impact on landing so the tube maintains its integrity. Even with the addition of a central web, the weight is comparable to that of conventional skid tubes. Comes standard with full length tungsten carbide welded