The morphology of the root canal prepared by progressive multi-taper is conducive to root canal irrigation and filling; it improves the success rate of root canal treatment. Each file can perform its own duty according to different positions of the root canal. The whole process of root canal preparation only needs 3-5 files, which simplifies the operation of root canal preparation and improves efficiency. Notice: the patient's tongue and lips should not contact with the files, and the protaper files should not be in contact with other instruments. size: 25mm Material: Metal colour: As shown Package Contents: 12 x Machine large taper file Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.