Sandpaper, specially made for the ToolKid sanding block, suitable for sanding by hand (so not for electric sanding machines or devices).
The grit sizes vary from P120 (fine) to P240 (very fine), 5 sheets packaged per grit size.
With extra corner pieces for sanding in corners. These pieces wear the quickest and can be replaced separately. The sandpaper is easy to attach to the sanding block.
Download the user manual here