ACTION Drives & Bearings, Inc. East Hanover, NJ 07936 Lovejoy or Revco 3 Jaw Coupling 1pc- L075 x1/2 bore with 1/8 keyway, 1 setscrew 1pc- L075 x 7/8 bore with 3/16 keyway, 1 setscrew 2 pcs- L075 spider/sox Coupling Half Outside Diameter- 1.75" Overall Complete Coupling Length- 2.13" ****If this part doesn't match what your looking for, we can supply different shaft sizes in the L075 coupling at the same price. Please see all available shaft sizes below. 7/16, 9/16, 1/2, 5/8, 3/4, 7/8