Jaw Coupling Hub, Coupling Size L090, Outside Diameter 54 mm, Coupling Overall Length 54 mm, System of Measurement Metric, Hub Material Carbon Steel, Maximum Speed 9,000 RPM, Horsepower @ 100 RPM 0.23 hp (Buna-N Spider), 0.35 hp (Urethane Spider), 0.64 hp (Hytrel Spider), Keyway Depth 2.8 mm, Keyway Width 6 mm, Bore Diameter 20 mm, Shaft Locking Type Set Screw, Bore Type Round Bore with Keyway, Jaw Profile Straight, Compatible Center Element Manufacturer Part Number L090H, L090N, L090U