Scientific Anglers Stay-Lok Snaps 6 pack Fly Fishing Accessory - The most reliable fly snaps, period. Change out your streamers without having to cut back your tippet or wire section every time. Unique design ensures these will not open when casting large pike and muskie flies or when fighting toothy fish Made from extremely strong .24” stainless steel (Size #2) | .30” stainless steel (Size #3) | .40″ stainless steel (Size #4) Black finish 6 to a package