(1) Unisex Luxury Stainless Steel Heavy Duty Collar with Brass Lock Joints. With Brass Lock Joints, more convenient. This is a restraint system that is both high-function and high-fashion. Made from strong, cold, heavy steel allowing long use and wear. Our blacksmith custom makes this item by hand.

It has one O-rings for attachment to chains, ties or other bondage gear. Means you can securely lock your sub to the toys of your choice.

The inside diameter is 14.0 cm, the width is 3.0 cm, the thickness is 0.8 cm.

(2) The weight of this item is approximately 825g.