●Superlok Block and Bleed Valves ●Connects Fractional Tube (Interchangable with all major brands i.e.; Parker, Swagelok, DK Lok) ●STAINLESS STEEL BLOCK VALVE - SUPERLOK BLOCK AND BLEED VALVES ●Ends Leaks-Saves Time and Money ●Red Ring Fitting-A built-in Gap Gauge