Our .040” plain aluminum, .050” colored aluminum (blue and red) .032” brass and .031” stainless steel identification discs are 1-3/8” in diameter with a 1/8” hole. Metal tags can be supplied blank or stamped with an identifying name and/or a consecutive number. Customized lettering is stamped and numbered in 3/16” type. Black-filling is available for those applications requiring added visibility.