Empi 17-2617 Steel Coupler For Steering Shaft Or Rack & Pinion. Pinch Style / Weld On, 7/8" Smooth With Charlynn Key Way Type: Pinch Style Allen Lock Screw Length: 2" Inside Finish: 7/8" Smooth with Charlynn Keyway Note: Generally Used for Steering and Shift Rod Linkage Configuration.