Sierra Shieldsaust-C 1-3/4″ SierraShieldsaust – C 1″ Hose has a black synthetic black tube and cover. TheShieldsaust – C Hose is reinforced with double wire helix embedded between plies of synthetic cord and is abrasion resistant. Specifications: I.D.: 1 3/4” or 45mm O.D.: 2 7/32” or 56mm Wt. “C”: 85 Ply:2 Bend Radius:4 x I.D. Burst Pressure:175 PSI Working Pressure: 60 PSI The temperature ranges from -20F to +200F continuous, +250F intermittent Applications: Primarily used for wet exhaust connections with significant bends, engine intake and scupper lines The hose now has double the ozone resistance required by SAEJ2006 This hose meets SAEJ2006 Type R2 standards