This ball is for externally threaded barbells and has an original Crystal!
The article can, like all basics, be sterilised in an autoclave and due to the skin friendliness of the material it is absolutely harmless to allergic persons.
By the way, all of our threads are standardized, so that you are able to combine rings, balls, studs and attachments! Please pay attention to the different kinds and sizes of the threads.
Amethyst, Aurora Boreale, Capriblue, Circonblue, Cobald Blue, Emerald Green, Light Blue, Pink, Red, Rosa, Sapphire Blue, White
1,0 mm, 1,2 mm, 1,6 mm
2,5 mm, 3,0 mm, 4,0 mm, 5,0 mm, 6,0 mm, 8,0 mm