Hex-shaped billet aluminum compression fittings from Pi-Thon Design are designed to replace conventional automotive hose clamps. Pi-Thon says its new Hex HoseLocks can eliminate practically all of the drab hardware cluttering coolant hoses, power steering return lines, and vacuum hoses. Just remove the old. hose clamp, slide a patent-pending billet aluminum Hex HoseLock compression fitting over the end of the hose, push the hose onto the appropriate neck on the engine, radiator or firewall, and tighten the two halves together. The compression ring inside each Pi-Thon Hex HoseLock clamps around the hose for a secure seal, and works with rubber, silicone, or braided stainless steel hose or even plastic or metal tubing.