Martin Sprocket & Gear Martin 1070M10UPC: 697950863306 | UNSPSC: 31163003 | GTIN:Couplings > Grid Couplings > Grid Couplings - CompleteMartin Blue-Flex™ Grid Coupling Assembly, Reboreable, 3/4 to 2-1/2 in Bore, 6.37 in OD, 6.12 in Overall Length, 3.44 in OD Hub, 3 in Length Through Bore, 8800 in-lb Torque, 4125 rpm Maximum, 13 hp Power, Steel, 6.37 in H DimensionsSpecs:Length Through Bore: 3 inHub Size: 3.44 in ODTorque Rating: 8800 in-lbPower Rating: 13 hpBore Diameter: 3/4 to 2-1/2 inOutside Diameter: 6.37 inDimensions: 6.37 in HMaterial: SteelOverall Length: 6.12 inMaximum Speed: 4125 rpmType: ReboreablePackaging:Weight: 22.0 lbCertifications/Standards:ANSI Specified | B29.1 - 1975Warranty:Limited