The G-Hold 50 is recommended to secure paddles, boga grips and anything of moderate size up to 2 inches around. This G-Hold is 50mm(2 inches). The flexible quick-release strap has two securing points for security of minimum and maximum diameters, providing strong retention. The G-Hold strap has rungs with which to set the tension of each G-Hold firmly. While G-Holds are supplied in singles, it is recommended to use two for long-spanning objects, similar to molded rubber or folding paddle clips. During installation, make sure the G-Holds are parallel when mounted in pairs. When fitting to a StarPort on a vertical surface, make sure the longer arm is positioned at the bottom because this provides extra support before tensioning the strap in place. All G-Holds install in any RAILBLAZA base. No hardware is needed for accessory installation because the RAILBLAZA port based system is not included. **All RAILBLAZA accessories fit the different RAILBLAZA port based systems. Base not included.