Description Description Hide Show 3 PACKS BAIT INJECTOR CAPS IN TWO SIZES TO FIT STANDARD BAIT INJECTORS & MAGNUM BAIT INJECTORS for years anglers have asked us to offer just the replacement bait injector caps with needles rather that the whole bait injector bottle and cap. Needles get damaged and lost, or anglers just wants to screw a needle / cap assembly onto their favorite 2 or 8 ounce scent bottle, and inject.