Wasp 3.0" x 1.0" TT labels, 4 rollsWasp 3. 0" x 1. 0" TT Labels 4 Rolls The Wasp 3. 0" x 1. 0" Thermal Transfer (TT) labels come in a convenient four roll pack, designed for busy workflows that demand durable, legible labeling. Thermal transfer technology uses heat to transfer ink from a wax or resin ribbon onto label stock, producing crisp, long lasting text and barcodes that withstand handling, shelving, and light exposure. This makes the 3. 0" x 1. 0" format an ideal choice for