Pre-Cut masking tape from Cantonese-C 

Pre-Cut masking tape made for Fortune Meow's Studio Kyrios Tail Unit

Pre-Cut masking tape for the main resin conversion kit sold separately:

As the name implies, this product consists of sheet/sheets of masking tapes with shapes and patterns pre-cut into the corresponding areas on the kit that requires masking

Intended as a time-saver for those that knows how to mask

Intended as an aid for those that don't know how to mask