6MM Thin Polished Gold Eternity Collar Slave Collar Our popular 8MM ring style locking titanium gold collar is now available in a thinner version. Suitable for 24/7 wear. Thickness 6MM Also available in a thicker 8MM, please see other listings. This collar is 361L stainless and has no metal alloy. Optional ring sold separately. Leather ring recommended for color collars as there is no chance of scratching. Measure the center of your neck and add 1-2" for best fit. In stock and ready to ship. Discreet US shipping