-Ergonomic, single-handed design provides optimal tactile control and reduces hand fatigue -Eliminates the need to hold small restorations and use rotary instruments or articulating films. -Central opening for enhanced visual perception and access for tools -Will not remove excess enamel or cut lips or gums -Flexible strips conform to the natural contours of the teeth to avoid creating sharp corners. -Autoclavable and reusable. Package: 10Pcs/Pack ,1Packs in total.