A single fitting offers secure connections and quick disconnection—no need to purchase two fitting halves. Simply push tubing past the O-ring to the internal tube stop—steel teeth on the collet grip tubing for leak-proof connections. To disconnect, press collet against fitting body to disengage steel teeth—tubing slides right out. Fittings work with semi rigid plastic (polypropylene, polyethylene, nylon) and soft metal (brass, copper, mild steel) tubing. To connect flexible tubing such as Tygon or silicone, order soft tube supports. Meet NSF and requirements for food-grade applications Quick-disconnect convenience for a wide variety of tubing material—including soft metals.