Safety is the largest issue concerning Pintle hooks and receivers. Ever seen one of these?
My job is to make sure ball wear is minimised and to provide a safe environment. You know what?
I cannot make a standard Pintle Hook safe unless it undergoes major re-design.

This tow ball was removed from a Pintle hook and brought to me. The customer just wanted to replace the ball, get the same wear and replace the ball again and again until something else breaks and maybe hurts someone.
Hurting someone with my product concerns me greatly.
The CM532 is now being marketed as the best alternative to ALL EXISTING PINTLE HOOKS on the market today.
Towing can safely be undertaken with either a ball or Pintle coupler.
The success of this design is in the casting. The ring coupler cannot get close to the ball to cause wear.
The ring pulls on a higher rated surface in the casting and creates no noise from wear or slack.
This Pintle Coupler is certain to gain popularity quickly due to its cost saving and safety features.
There is not often a product that comes along which is a preferred coupler for safety AND economics.