Protect against unwanted interference. Deter unwanted interference and protect your property. Any tampering is immediately obvious; the labels leave a message reading 'STOP' when removed and cannot be reapplied. Ideal for: Sealing PC's, machines and electronic equipment, Deterring intruders when used on doors, switches and containers, Securing CD jewel cases for privacy. Oil and dirt resistant, splash proof, tear proof, temperature resistant. Easy and quick to use with FREE Avery Wizard software for Microsoft Office. 45.7x21.2mm Ref L6113-20 [960 Labels].