Jaw Coupling Hub, Coupling Size L190, Outside Diameter 4 1/2 in, Coupling Overall Length 4 7/8 in, System of Measurement Inch, Hub Material Cast Iron, Maximum Speed 5,000 RPM, Horsepower @ 100 RPM 2.7 hp (Buna-N Spider), 4.1 hp (Urethane Spider), 7.4...