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 hp (Hytrel Spider), Keyway Depth 1/8 in, Keyway Width 1/4 in, Bore Diameter 1 1/4 in, Shaft Locking Type Set Screw, Bore Type Round Bore with Keyway, Jaw Profile Straight, Compatible Center Element Manufacturer Part Number L190H, L190N, L190U This product contains a chemical that is regulated under California Proposition 65. Warning: This product contains a chemical known to the State of California to cause cancer. Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. -