Herm Sprenger Black Stainless Steel Prong Dog Training Collar with Swivel.

About this item Black Stainless Steel Prong Collar: This model come with two O rings; Size Medium 3.2 mm x 23 inches overall collar length; For dogs with the neck size Up To 19 inches Removable Links: Slightly beveled prong tips: Interlocking links, each link equipped with two blunt prongs; Links can be added to make the collar longer or removed to make it shorter; Up to 4 links can be added or removed How to Size: Collar should fit snuggly just below the dog's ears, measure the circumference of dog's neck and add 3 inches Made in Germany: You can always expect highest quality collars which are made in Germany by Herm Sprenger Will Not Rust: Black German stainless steel will not rust and will perform for the years to come