Haakaa nail refill – when it's time to replace the old sanding pads! After a while, they become dull and need to be replaced, just like the blades on et razor do, and it's nice to have them right at hand if you suddenly find they become dull while you're filing your nails. The sanding pads for the electric baby nail file are easy to replace. The electric baby nail file is not included in this product.