Jaw Coupling Hub, Coupling Size L150, Outside Diameter 3 3/4 in, Coupling Overall Length 4 1/2 in, System of Measurement Inch, Hub Material Carbon Steel, Maximum Speed 5, 000 RPM, Horsepower @ 100 RPM 2 hp (Buna-N Spider), 3 hp (Urethane Spider), 5.9 hp (Hytrel Spider), Keyway Depth 1/4 in, Keyway Width 1/2 in, Bore Diameter 1 7/8 in, Shaft Locking Type Set Screw, Bore Type Round Bore with Keyway, Jaw Profile Straight, Compatible Center Element Manufacturer Part Number L150H, L150N, L150U