This blowpipe has everything going on. It’s oval, it adjusts, it tilts…..that’s everything you need in a blowpipe. AirStream Tilt Blowpipe – This blowpipe is designed for ultimate comfort. It is fully adjustable in both length and angle. The length adjusts from 8.5″ to 11″. The Tilt comes in both mounted and unmounted. It has a 3/8″ bore, built in valve, and a mouthpiece is included.