These cuffs are made oval to fit and look better. They are made of solid stainless steel 5/16 rod. The hinge pin and locking screw are stainless steel as well to allow for 24/7 wear. Allow some extra room for the fit you wish.
Price is for one cuff.
Extra Small - 1 7/8 inches X 2 3/8 inches (Fits up to a 6.5 inch wrist)
Small - 2 inches X 2 1/2 inches (Fits up to a 7 inch wrist)
Medium- 2 1/4 inches X 2 3/4 inches (Fits up tp 7 1/2 inch wrist)
Large - 2 1/2 inches X 3 inches (Fits up to an 8 1/2 inch wrist)