The slickest and easiest way to load a kayak. Friction free design for super smooth loading. Requires additional pair of saddles. Product replaces the 875 Hydro Glide saddle carierSmooth loading achieved with low friction, felt lined saddle. For use with 878XT Set To Go saddleFits Thule standard and Xsporter load bars, Yakima, and most factory installed racks.Maximum hull conformance and kayak support provided by large surface area saddle 6x more contact area than roller type. Includes one ratcheting tie down, strap and buckle protector. Additional tie down required for safe boat transport. Sold as a pair. May require the use of Xadapt3 80 MM bolts on some factory applications.Please consult your local retailer for further information. This item will require the use of Xadapt3 80 MM bolts on our XSporter 421422 and Rapid Aero Bars.