?Notice?Please match a suitable lead, do not match too long lead to avoid the choking function of the collar does not work; In order to prevent the collar from wearing out during transportation, the collar is untied and is a chain, so buyers need to clasp it by self . ?Strong and Effective?The stainless steel material is strong and hard to break. The slip chain allows you to easily control dogs and effective correct it. This metal dog collar suitable for daily walks, outside, training of big dogs, small dogs and medium dogs. ?Smooth and Safe?The edges of the heavy duty dog collar are smooth to prevent piercing the dog’s skin. The thick chain can also prevent the dog's neck from being injured. ?Size? The thickness of anti chew dog chain is 10mm, This dog chokes length has 12inch, 18inch and 22inch. You need measure dog's neck girth and add 2-4 inch for initial collar length for Adjustment. ?Material?Dog collar chain made of high quality 18K gold-plated stainless steel, anti chew and resistance to rust.