It is a safer and effectiver training collar, it puts even pressure around the neck. DEYACE Prong Collar does not apply direct pressure to the trachea, so you can train a dog with little or no tugging, jerking, or pulling. Made of high quality stainless steel and carabiner hooker, the size of this collar can be adjusted by adding or removing the links individually.

Features:
Interlocking links, each link equipped with two blunt links
Quick release carabiner hooker easy on and off
Slightly beveled link tips and rubber covers
Easy to increase or decrease in size
Made of high quality stainless steel
Additional 10 rubber covers and 1 link
User's manual

NOTE!
Stainless steel is not likely to stain light fur, but is not suitable for nickel-reactive dogs as it contains nickel.
It is NOT recommended that you leave it on unattended dogs.

Available sizes:
2.5 mm x 10.5" (MAX 27 cm)
3.0 mm x 13.5" (MAX 34 cm)
3.5 mm x 17.0" (MAX 43 cm)
4.0 mm x 21.0" (MAX 53 cm)

Care:
wipe it down with a clean, damp cloth
for more stubborn dirt, use a little water, some mild soap, and a soft-bristled toothbrush
after cleaning, wipe it down with a clean, dry cloth