Our lockable slave collar is one-inch wide, 1/8 inch thick stainless steel. The metal constantly reminds the slave of their place. Brightly burnished stainless steel is used throughout; craftsmanship is reflected in every little glint the collar throws off. Sizes in inches by circumference are 12,14, 16 and 18. We will custom size to any size up to 30 inches, prices vary accordingly. Pictured with lock, sold separately. This collar is also available with engraving (see elsewhere in product listing page).