Res-Im is an aftermarket company out of Czech Republic that specializes in resin details and masks. This set is designed for the 1/48 Tamiya “Tilly”.
The set includes masks for the tires, the clear parts (headlamp, windshield, windows), plus masks for the RAF version, as well as masks for the American version (Stars), with and without a surrounding circle.
Applying the masks is very easy, just lift them carefully with the tip of a #11 blade and burnish in place. The masks are made of some sort of plastic material with a little bit of elasticity to it, so don’t handle them too roughly or they might deform. The masks are low tack, but tacky enough that there will be no bleed of the paint under the mask.