California Exotics' Rock Hard Pump Kit is an all-in-one package deal that can completely change the erection of any man. It comes with a flanged base, removable donut, bulb, adjustable ball spreader, and a removable cock ring. They literally thought of everything when designing this kit. You and your partner's sex life will be forever changed by this pump kit. It is 7.5" by 2" so it can fit over just about any penis. If it can't, you probably don't need it in the first place.