Inline hydraulic live swivels, also called straight live swivels, full-time swivels, or hydraulic rotating joints, allow a hose or fluid line to rotate while maintaining a straight flow path. This controlled rotation helps prevent hoses from twisting, kinking, loosening, or wearing prematurely as connected equipment moves. “Inline” and “straight” describe the same basic configuration: both swivel connections are aligned along one axis. Choose an inline swivel when the hose should continue in the same direction; choose a 90-degree or dual-plane swivel when the line must change direction or move across multiple axes.