Structural Pipe Fitting, External Coupling, Aluminum, 1.5 in Pipe Size, 32510 lb Tensile StrengthMfr # 70 8 Item Structural Pipe Fitting Material Aluminum Type External Coupling Tensile Strength 32510 lb Resists Corrosion Setscrew Internal External Reverse Knurled Standards ASTM B179 535 Fitting Type External Coupling Material Tensile Strength (Lb.) Over 32,510 Guardrail Material Internal External Reverse Knurled Series Speed Rail(R) Finish Unfinished Modular Component Connection Fitting Weight 0. 57 lb Rated for Fall Prevention Yes Brand and