Simms Pro NipperThe award winning Pro Nipper from Simms is one of the coolest, and most essential tools that we all use for a day of fishing. Simms took and poured gasoline over the flame with a great new features; A set of magnets and a built n groove for holding the fly and threading tippet thru the eyes of those small size 18s 22s flies. It also uses a magnet to create negative resistance that replaces the traditional spring for opening and closing the jaws