Shaft Coupler Body, Coupling Size L050, Outside Diameter 1 5/64 in, Coupling Overall Length 1 23/32 in, System of Measurement Inch, Hub Material Sintered Iron, Maximum Speed 18, 000 RPM, Horsepower @ 100 RPM 0.042 hp (Buna-N Spider), 0.06 hp (Urethane Spider), 0.08 hp (Hytrel Spider), Bore Diameter 3/8 in, Shaft Locking Type Set Screw, Bore Type Round Bore, Jaw Profile Straight, Compatible Center Element Manufacturer Part Number L50H, L50N, L50U, Screw Thread Size 1/4-20 UNC