Gardening Ring String Cutter

The blade to be incorporated in the ring must be removed from any normal pencil sharpener. No extra fixing should be required. The slot for inserting the blade is 0.8mm wide. The blade must be smaller, at least 0.2mm.

I draw your attention to the fitting of the blade, it is necessary to be careful not to injure yourself. I advise you to use a suitable tool!