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 Aluminum, 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 3/16 in, Keyway Width 3/8 in, Bore Diameter 1 5/8 in, Shaft Locking Type Set Screw, Bore Type Round Bore with Keyway, Jaw Profile Straight, Compatible Center Element Manufacturer Part Number L110H, L110N, L110U