There are different hollows to get your skates sharpened at to make them duller or sharper. The most common ones are 1/2″, 7/16″, and 3/8″. 7/16″ is our standard sharpening, if you want your skates sharper try 3/8″ and if you want them duller try 1/2″. You can come into the SDIA Pro Shop every day of the week from 10am- 8 pm to get your skates sharpened.