The THT-12-423-10 is a roll of thermal transfer printable labels designed for circuit board and component identification. These labels are constructed from Brady's B-423 permanent polyester material and measure 0.500 inches wide by 0.437 inches high. The material is UL, CSA, and AGA approved when used with a compatible ribbon, such as the suggested R6202 part. Common applications include general component marking and top-side identification for through-hole circuit boards.