Create a water-tight seal between two pieces of 1/2 in. (.700 OD) poly tubing without glue or tools, using a simple wrist action to push the polyethylene drip tubing into the compression fitting. Hold the compression fitting in one hand and the tubing in the other and force the poly tubing into the fitting about 1/2 to 3/4 in. deep by walking or wiggling the drip tubing back and forth into the fitting. The C36 compression elbow is used to prevent the 1/2 in. poly tube from kinking when a sharp 90 degree bend is necessary. Color: Blacks.