EZRip utilizes a blade with a hole because the tool has been engineered so that the blade is always under heavy spring pressure. As you score the drywall, the blade rotates backwards somewhat, giving you a quick, clean, accurate cut.
5 pack of blades
Specially designed blades for use with the EZRip Drywall Cutting Tool (#EZRIP)
Blades will also work with your standard Utility Knife