Made of 1 Inch or 2 Inch wide x 1/4 Inch thick steel stock with metal loops welded on. Available in 5 Inch and 6 Inch diameters (approximately 15-1/2 Inches and 18-3/4 Inches in circumferance). Please check
measuring instructions at the bottom of the Steel Bondage Page. Available in any color you want as long as you want black. A small "luggage" padlock is used to lock the collar (not included).