Climax Part RC-037 Mild Steel, Black Oxide Plating Rigid Coupling, 3/8 inch bore, 3/4 inch OD, 1 inch Length, 1/4-20 x 3/16 Set Screw
- Provides torque transmision and alignment.
- Easily installed where major disassembly would otherwise be required.
- Black oxide provides some corrosion resistance.