2.0mm chrome plated Martingale double row flat link Chain collar made by Herm. Sprenger in Germany; these chains are available in sizes 35cm, 45cm, 55cm & 60cm. Martingale collars are often described as "limited slip", a properly fitted martingale will only close to a limited amount while still giving an audible check; whilst the 2.0mm (wire diameter) Chrome plated steel collar is recommended for small - medium dogs similar in size/strength to the West Highland White Terrier or Cocker Spaniel, the double link Martingale is "very showy" & is often used by many other dogs. This Martingale is made from flat links, it is a style that has a flat surface apparantly "filed" onto the top & botom of each link, this causes the chain to catch the light as the dog moves around presenting a "jewelled" appearance, the double row Martingale is often used for dog showing & just as often used by doggie show-offs .
To calculate the correct size Martingale for your dog, please measure the diameter around your dog's neck just behind the ears with a tape measure & add 5cm to this measurement; choose a chain that is this size or slightly larger, but be careful it is not too large or the dog may be able to "back out" of the collar. With some dogs the width of the head can present difficulties with fitting your collar (e.g. Bull Terriers), if you are concerned that this may be a problem measure the diameter of the largest part of your dog's head (over the base of the ears) and check that your chosen size of collar is larger.
Sprenger Chainware has a well deserved Worldwide reputation for quality, longevity & affordability - you don't need to settle for second best; to be sure you are buying a genuine Sprenger product look for the quality mark "HS - Germany" stamped into each ring & swivel. Sprenger's quality control starts with the right choice of wire, their specifications are very strict, the wire must satisfy their stringent strength & flexibility requirements. The wire is electro-welded into the raw chains which are constantly checked for breaking strain before plating;
Sprenger's Chrome plating process is noted for its brilliant & durable surface, how do they do it? Whereas other manufacturers only dip the chains before plating, Sprenger uses a different procedure of mirror-bright polishing followed by dipping to remove non-metallic oils & greases from the chains. The advantage of this polishing is that the surface becomes much smoother and has a special bright shine, it is only then that it is first nickel then chrome plated; the grip of the nickel layer is tested by "bending” before the chains are finally chromium plated.