Jaw Coupling Hub; 1" Bore; 2.11" Hub Dia; Jaw Coupling; Hub; Shaft; Finished Bore; Keyway; 2.11" Outside Diameter; 1" Length Thru Bore; L095 Size or Series; Set Screw; Powdered Metal; 9000 Maximum Speed; Buna-N 194 | Hytrel/Bronze 561 | Urethane 291In-Lbs Torque