Plus version of the popular Pack Rack is 20 percent larger and has soft rubber fins and extra rubber in the bottom to hold your gear securely. Mounting block is made from machined aircraft quality aluminum and can attach to either handle bars or ATV cargo rack railing. Internal steel fork (see cross section below), surrounded by soft rubber keeps your equipment safe. All Rite's own patented fin design uses alternating long and short rubber fins to cushion objects being carried but don't bind up, making items easier to remove. Forks rotate a full 360 degrees so just twist the fork and lock the wing nut for a custom, tighter fit. Rubber snubbers included for use in rough terrain.