A pair of emery files with a 240 grit on both sides, making them suitable for normal to fragile natural nails
A 195mm professional length, double sided nail file with a fine filing surface. For soft,weak and fragile nails
The professional technique for using a trditional emery board nail file is to hold the file at one end to allow for one long, continuous sweep along the nail edge.
Hold the file at one side of the nail then sweep in one movement towards the centre of the nail tip. Repeat the same movement from the other side of the nail, again sweeping towards the centre.
This reduces the length fast and leaves the free edge smooth.