UNDERSTANDING RADIUS OF HOLLOW
Radius of Hollow is simply how deep the groove is that is cut into the skate blade from sharpening. The deeper the cut, the more grip the blade will have on the ice. The shallower the cut, the more glide the blade will have on the ice. A smaller Radius Ring (5/16”, 3/8”, 7/16”) will cut deeper into the blade creating more bite, while a larger Radius Ring (1-1/8”, 1”, 7/8”) will not cut as deep, creating more glide.