OmniPet Zeta Ring in Center Dog Collar with Black Metal Hardware, 1" x 20", Black To find correct collar length, add 4 Inch to dog's exact neck size The collars come in seven great colors and two styles; Regular and Ring-In-Center with a Dee Made in the United States with matte black durable metal hardware Water repellent, easily cleaned and soil, odor and rot resistant Available in five colors and in 16", 18", 20", 22", 24" and 26" lengths