11). Needle-shaped grinding head: used for nail surface carving and nail corner grinding; 22). Bullet-shaped grinding head: used to polish and remove nail protrusions; 33). Cone-shaped grinding head: used to polish the nail clipper, the gradual arc of the polishing needle makes it easier to polish the clipper to be smooth; 44). Cylindrical-shaped grinding head (small size): used to polish small nails, polish nail roots, remove calluses, remove thick dead skin, remove nails, etc.; 55). Cylindrical-shaped grinding head (large size): used to polish large nails, polish nail roots, remove calluses, remove thick dead skin, remove nails, etc.; 66). Sand ring sleeve rod: The sand ring must be inserted into the sleeve rod before it can be used.