Yes, that is what is commonly called a martingale collar, though I admit that is the first one I've seen that is 100 percent chain. The nylon ones are much more common, I believe, like this:
(I apologize for posting a link to another retailer here. I didn't see where LB sells martingales.)
I have also seen ones that are a nylon/chain combo. The larger part is nylon and the smaller loop is chain.
The big advantage of the nylon one over that chain one you posted is that the nylon one is adjustable, which will be important for a growing puppy. These kind of collars require a very good fit. They do not come apart so you can buckle it around the neck. The only way to get it on and off the dog is slipping it over the entire head, ears and all, so it needs to be loose enough to do that, but not too loose or else the smaller loop will not tighten enough to be effective.
To clarify, what is commonly called a choke chain is one continuous piece of chain with O-rings at both ends. To use it you simply thread the entire chain through one of the O-rings so you get a circle. I have also seen them made of leather and called slip collars.
Regarding proper sizing of martingale collars, in my post above, if you go to the Amazon link I posted and scroll down to "Product Description," you will find instructions on choosing the correct size.
I have no idea what kind of collar is in the picture you have posted above (the nylon/chain martingale), so I cannot comment on it. I have personal experience with the Premier brand nylon martingale collars and can recommend them as being of high quality.
The Herm Sprenger Neck Tech is not the same as the traditional prong collars. I have no experience with them so cannot comment. To me, it looks like they are a "milder" version of a prong and would not be as effective if a prong collar is what you really need.
Just regarding the one you posted, though, I do not personally like the swivel on one end. The snap closure looks a little more secure than the quick-release alligator clips, but still, I have no experience with it so I will not comment.
Edited to add: Okay, I did a little more Internet searching, and I see the collar you posted just above, the HS Neck Tech Fun Snap, is not meant to be any kind of prong collar. It is, for all intents and purposes, just an all-metal version of a martingale collar. HS also makes other collars called Neck Tech that are modified versions of a prong collar. Confused yet?
Im speaking about martingale in this topic, I leave prong collar for future need.
I cannot find the one you guys using cause im in Italy and If I order from usa gonna cost too much.
Maybe this version of herm sprenger of martingale its better and more safe ?
Herm Sprenger Neck Tech Fun Carabiner Martingale Collar
The Neck Tech 'Fun' flat collar features the classic Herm Sprenger martingale chain assembly coupled with a lockable carabiner snap hook. The stainless steel construction makes the Neck Tech 100% rust proof, and the strength of the materials makes this light weight design extra sturdy and increadibly strong. Gentle on fur and extremely flexible the neck teck flat collar combines modern style and exceptional functionality.
The Neck Tech Fun martingale fastens with a lockable carabiner for additional security making the potential for unintended release almost impossible.
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