The 166-21303 straight fitting with swivel external thread IP66 21mm M20 black manufactured by HellermannTyton is specifically designed for industrial and hazardous area applications. This fitting is RoHS compliant and is made from durable black polyurethane. It is suitable for use with conduit systems for cable protection and is certified to IP66 protection rating for use in harsh, wet and corrosive environments. The fitting offers a swivel external thread M20 connection, a maximum operating temperature range of -40 to +90°C, and a Type 11 configuration for easy installation on conduit systems. This fitting is suitable for a variety of applications including Marine, Petrochemical, Oil & Gas, Manufacturing, Construction, and more.