Drip-Lock fittings connect 1/2-in. drip distribution or emitter tubing to a sprinkler line, hose faucet or valve. They fit 1/2-in. tubing with outside diameters ranging from .630- to .700-in. Stainless steel teeth grip the pipe tightly and a special O-ring creates a watertight seal while still allowing for rotation of the fitting after insertion. A built-in removal collar allows for easy reconfiguration and reuse of the fittings, including end-of-season disassembly for compact winter storage. The Drip-Lock manifold is an especially convenient way to connect 1/2-in. distribution tubing to 1/4-in. distribution tubing which can then go to each individual plant. For outdoor irrigation use with cold water only.