Magnetic Round Ball Stretcher is made of solid stainless steel material. This magnetic ball stretcher is so much easier to put on and off. No more pinching of the skin, no more hassle with hexagon keys and endless screwing. Thirty seconds max and you're done. These ball stretchers have a ring segment that comes out and locks into place with strong magnets. These magnets are so strong that you don't need to worry, it's not going anywhere. Measures 30,33,36,39 mm hole diameter.
