Rapid E-Loader-9V 350-Round Paintball Hopper, Black: * 350-round paintball capacity * 20 balls per second feed rate * Tab type sensor (no optics to clean) * Four-impeller system * Forcefeed type system * Durable poly-carbon shell * LED power indicator * Single 9 volt battery power source (not included) * Easy access battery compartment * Spring-assisted lid * .50 caliber * Color: black * Model: 31030