Pressure sensitive backing attaches securely to almost anything - paper, wood, plastic or metal.
4 1/2 x 5 1/2" S-1686
4 1/2 x 5 1/2"S-209
5 1/2 x 10"S-2112
4 1/2 x 5 1/2"S-5968
4 1/2 x 6"S-2328
4 1/2 x 6"S-2327
7 1/2 x 5 1/2"S-3470
4 1/2 x 6"S-561