The HellermannTyton 166-22612 Conduit Fittings & Accessories Elbow Fitting 90 with Swivel Internal Thread IP66 28mm PG21 is a convenient conduit fitting specifically designed for outdoor applications. Constructed from lightweight, weather-proof PA6 material with an IP66 rating, it is resistant to dust, dirt, oil, water, and other potential contaminants. This elbow swivel fitting features an inner thread diameter of 28mm, allowing it to securely attach to any conduit pipe or tubing with a compatible fitting. The internal thread allows for standard PG21 gland connection, making installation easy.