The blades fit slots as narrow as 1 mm and are made from a special high stainless steel alloy so they won’t bend The exclusive handle provides superior leverage and control. Mirror image blades are offset 45° and can engage prepared slots on any surface of the crown. Our most popular crown remover gives you easier access, less preparation and more patient comfort. CROWN SPREADER, D/E Our most popular crown remover gives you easier access, less preparation and more patient comfort. Mirror image blades are offset 45° and can engage prepared slots on any surface of the crown.