Dava's Grip Tip Combo pack contains 2 each of the delrin, nylon, and gel grip models Dava's Grip Tip picks are a revolution in design Utilizing patented over-molding technology and multi-gauge flexibility, musicians not only get a velvety fell and unparalleled grip, but also the ability to change pick gauge "on the fly " Grip the tip for a hard gauge or release the flexible center section for a smooth rhythm feel