Copic Marker mask it Medium Tack Sheets 8/Pkg-15"X10 Medium tack, flexible masking film, easy to cut 15" x 10" (8 sheets/pack), matte finish, transparent - easy to trace through Great for die-cutting, ideal for masking & airbrushing backgrounds, Protects sections of artwork during coloring, multi-surface - Works well on metals, glass, wood, paper, plastic & fabric