Size:This LED blackout high temperature masking tape is about 3cm/1.18 inches wide,50 metres/roll.Plastic Material:The masking tape is made of plastic, strong initial adhesion, waterproof, the surface has been treated by a special process, the thickness is ultra-thin, and the masking effect is good.Privacy Protection:You can cut this tape into any shape and stick it on the cameras of laptops,tablets,mobile phones,monitors and other electronic devices to prevent hackers or malware from remotely manipulating the cameras to spy on your privacy.Blackout and Heat Insulation:Masking tape can be used to block out light from windows,blinds and gaps on windows,edges of glass doors or other places where light needs to be blocked out,it can effectively block the intrusion of outdoor light and ultraviolet rays,which can lower the indoor temperature and provide a more shady environment.Ideal Choice:This blackout tape is ideal for bedrooms,nurseries,rooms,meeting rooms,cinemas,photo studios,laboratories.