Heavy Cock Ring with attached Double Anal Ball. Stainless Steel high mirror smooth Finished heavy weight Cock Ring with attached double anal ball. The ball can be screwed of and replaced by a bigger ball or a bigger double ball which can be order separately. Available in 4 sizes, 40, 45 , 50 and 55 mm. Sizes given are inside diameter. The standard double anal ball supplied with the cock ring is 30 and 25 mm. diameter.