ADD BLING OR STING with Boss Switchblade Swimbait Heads. These come in 3/8 oz, 1/2 oz, and 3/4 oz, all 3 to a pack. Aavailable in 3 colors Pearl White, Holo Shad & Natural Shad. This unique head features a custom spring steel wire that when pushed up through the body of a swimbait, clamps back down on the shank of the hook which allows an unmatched staying power for hollow bodied swim baits. This same wire also allows you to add a treble hook or spinner blade.