This is the Miflex DS 28 inch Regulator Hose Braided Reg hose Features: Increase comfort and reduce jaw fatigue Low profile male swivel on the first stage Swivel ball joint on the second stage Chromed brass construction LENGTH: 28 inches The new Miflex DS (Dual Swivel) hose prevents your hose twisting while taking your scuba rig off and eliminates the push and pull of your mouthpiece.