Heavyweight polyolefin tube shrink-fits in seconds to become a peel-proof case around the entire face of the padlock. Colors are much more durable than anodized padlock colors and will survive the 'demolition derby' in the tool box. Retrofits a 'mixed' variety of padlocks to attain uniform appearance as required by OSHA and are easy-to-apply with heat gun. Also available factory-installed on Idesco padlocks. Color-coded and printed sleeves identify lockout mechanic by name, department, plus an intercom to call for a status report.