The only metal prong we use due to its non tightening function, this collar offers more immediate communication than the tightening version when training your dog. Quick on and quick off for a no hassle training session, this stainless steel black collar is the easiest prong collar to work with. Whether you have a powerful breed, have physical limitations or are fine tuning your obedience training, this collar can help pave the way to a better trained dog who can join you for any outing.