Sextreme Magnetic Ball Stretcher can aide in delaying ejaculation with some weight to put some stretch on your pecker. is a testicle ring and testicle weight in one! It can be put on and taken off much easier than the rings with a screw and key: the magnetic piece makes this possible. Please note: the magnets are very strong, make sure that no skin gets caught between the magnets! Size: Thickness: 1.5 cm, Weight: 260g,Inner Diameter: 0.45 cm.