1.Unique spiral design, close to the root canal orifice, with deceleration function, to avoid rushing out of the apical orifice.
2.Super cutting efficiency, variable chip removal groove and fixed taper design, flexible and easy to move forward in the curved. root canal, can completely remove the blockage in the root canal, greatly improve the ability of users to control the mechanical contact with the root canal.( dental file, root canal file, rotary file)