There are a variety of names that go under the broad heading of training collar. Some of them are — choke collar, choke chain, training collar, correction collar and slip collar. These are all training collars and are used by professionals and amateur trainers alike.
Training collars are effective tools if they are used properly. Here are a few thoughts to apply when using training collars:
Does it fit? A properly fitted collar makes the collar easier to use and a lot safer for the dog. Determining if the training collar is the right size is relatively easy. The ideal size training collar should fit snugly, yet comfortably over the dogs head. It is important that the training collar not fit too tightly, but it should not be too loose either. A training collar that is too tight will be too hard to put on and off. On the other hand, a training collar that is too loose can accidentally fall off of the dogs head when it lowers its head. The collar should also not be too long.
It is best to measure the dogs neck with a tape measure, then add 2 to 3 inches to that measurement. So if your dog has a neck 12 in diameter, you would want to buy a training collar...