Stone Chainrings
Stone chainring’s tooth is the unique design of Stone. It is now in it's 8th stage of evolution. It different from 99% chainrings on market, because of advanced research and precision. Aluminum 7075 T651 from USA Aleris and Aleco assures good quality product and material. Good material is the base of long lifespan. All CNC center from China Taiwan. Process precision 0.03mm.
