L075 Buna N Jaw Coupling Insert, Rated Torque: 90 in-lb, Max. RPM: 11,000 RPM/ LUG QUANTITY: 6 OVERALL OUTSIDE DIAMETER: 1.750 INCHES NOMINAL OVERALL THICKNESS: 0.438 INCHES NOMINAL SPECIAL FEATURES: LAMINATED CONSTRUCTION FEATURE-NOT INCL.;HUB THK 0.250 IN.;MATL-RUBBER BUNA-N MATERIAL: RUBBER SYNTHETIC STYLE DESIGNATOR: A10 SPIDER