The new Knacker from Little Atom features a patent-pending built-in rattle design, for maximum sound vibrations. It also features a heavy-duty chain hook that can be snapped on/off in a jiffy to alternate between chain hook, treble hook, or dropper hook. Tip hook with bait (spikes, waxies, minnows, mousies, etc.) or Little Atom Nuggies Tail. For aggressive fish, fish the Knacker by pounding the bottom vigorously and pause for several seconds, repeat until fish strike. For finicky fish, just dead-stick and the chain-hook will trap the finicky biters. Knacker is available in two sizes (1/4 oz. or 1/8 oz.) and 10 different colors. Replacement chains also available for each size (6-link for 1/4 oz and 4-link for 1/8 oz) in the color drop down box - pack of 4 chains for $2.64.