The SCS 129LABEL MIL-STD-129N Attention Label, 2 in. x 2 in., 500 per Roll is a 2 in. square self-adhesive label that is easy to use and provides the Mil-STD-129 ESD sensitivity symbol and attention message to warn that ESD control precautions are needed when opening packages and handling contents. This permanent adhesive destructible type label is "tamper evident", allowing easy monitoring of whether or not a package has been opened.