I show Cairns in New Zealand and recently purchased an extra fine black martingale chain. It looks great and are so light weight and gentle. Money well spent with speedy service. Only place I have found that can provide the extra fine black chain.
Martingale show collar made from the same #1 black electro plated De-Val chain as our choke collars for minature dogs. Links measure approximately .200" wide. Rings measure approximately 1/2" diameter. De-Val martingales run 1"" inches larger than our other martingales which is based on the open diameter. To determine the proper size, loosley measure your dog's neck with a tape measure and add 1-2". Make sure the open diameter is large enough to go over the dogs head. It is usually better to up to the nearest size if in doubt. See below chart to see open and closed diameters:
|Size||Open Dia.||Closed Dia.|
|8"||8 1/4"||6 1/2"|