Thick Real Leather Studded Dog Collar Fits 19"-23.5" Neck, Largest Breeds. Strong and durable 3/16" thick collar made of high quality real leather. Nickel-plated hardware and D-ring. Contrast color thick waxed thread stitching. Overall length 27", will fit 19"-23.5" neck. 4 metal enforced adjustment holes 1.6" wide double layer genuine leather