Jaw Coupling Hub Coupling Size L110 Outside Diameter 3 21/64 in Coupling Overall Length 4 15/64 in System of Measurement Inch Hub Material Stainless Steel Maximum Speed 5 000 RPM Horsepower @ 100 RPM 1.3 hp (Buna-N Spider) 2 hp (Urethane Spider) 3.6 hp (Hytrel Spider) Keyway Depth 5/32 in Keyway Width 5/16 in Bore Diameter 1 1/2 in Shaft Locking Type Set Screw Bore Type Round Bore with Keyway Jaw Profile Straight