Here is a pack of five #320 grit SandingBelts for use with the SandingStick by Excel, which is a great tool for getting into hard-to-reach places.
The Sanding Stick (available separately) uses one of these thin belts of sandpaper that can be rotated when a fresh sandpaper surface is needed.
This convenient hobbytool is about the size of a large pen.
It is very useful in many hobbies and crafts, such as scale modeling, modelrailroading, metal finishing, woodworking, ceramics, electronics, pattern making, auto-body finishing, mold finishing, jewelry making, dental device finishing, taxidermy and so on.
Additional sandingbelts in various grits are available separately. Photo is a representative sample. Actual item may vary.