Part Number Compatability C73-440 (13/16 Inch Uni-Ball Weld Cup)Compatible with FK Bearing or Aurora brandRod End Insert COM6 orTeflon Rod End Insert COM6-T C73-441 (1 Inch Uni-Ball Weld Cup)Compatible with FK Bearing or Aurora brandRod End Insert COM8 orTeflon Rod End Insert COM8-T C73-442 (1-3/16 Inch Uni-Ball Weld Cup)Compatible with FK Bearing or Aurora brandRod End Insert COM10 orTeflon Rod End Insert COM10-T C73-443 (1-7/16 Inch Uni-Ball Weld Cup)Compatible with FK Bearing or Aurora brandRod End Insert COM12Teflon Rod End Insert COM12-T Note: These are designed for a light press fit. They are machined to the dimensions published by the manufacturers of the bearing inserts. Made for Rod End Inserts Pro-Werks Uni-ball bearing cups are precision CNC machined from Chromoly Steel (4130N) and accept most popular brands bearing inserts. It is recommended to confirm dimensional compatibility with the brand of Rod End insert of your choice. These offer the perfect solution for installing spherical bearings in many performance applications that don't require adjustment that of a threaded shank Rod End. Snap ring is included. Anatomy of a great Uni-Ball Cup: There is so much riding on these components, it’s worth using the best parts available. You can always count on Pro-Werks to do it right! PRO Tech Tip: Welding causes distortion. Installing a removable, snug fitting "heat sink" machined out of steel or aluminum into the bore is recommended during the finish welding process. Note: Welding should always be performed by a qualified welder.
