Use the Brady M4-126-490 black on white polyester labels in combination with your Brady label printer. These labels are ideal for use in laboratories. Even under extreme temperatures, the labels will stick. Use the labels in the freezer or in combination with liquid nitrogen or hot water (100 degrees). The white tapes have a matte finish and are made of Freezerbondz polyester. This package contains 180 pieces. Dimensions: 45.72mm x 15.24mm.