This set is a canopy and wheel mask for the Hasegawa 1/48 Tenzan kit. It is large 'greenhouse' canopies as is on this plane that makes masks like this so useful. I have masked multiple pane clear parts such as this in the past, and while it is not difficult, it is time consuming and risks the possibility of scratching the panes if one's knife slips.
This set includes main and tail wheel masks and is made of kabuki tape, which is preferred by many over vinyl. Well worth picking up if you have this kit.