This Dead Design offering is a set of masks for the Hasegawa 1/48 A-4M/KU Skyhawk. This set has more than just canopy masks and also provides masks for formation lights, landing lights, and the nose and main wheels.
The masks for the windscreen/canopy are such that you can also do the sealants that surround these clear parts. The canopy mask only covers the edges and so you'll need liquid masking material for the center parts of this part.
These are kabuki tape type of masks for those who would rather use that material. As with all the tape masks, one has to have good eyes and lighting to locate the masks so they can be picked out with a blade tip. I've used these in the past and they work as advertised saving a bit of time and a lot of frustration. Well worth picking up.