Sierra Shieldsaust-C 1-3/4"Sierra Shieldsaust - C 1" Hose has a black synthetic black tube and cover. The Shieldsaust - 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;