Bertech Blue Masking Tapes are made of 1 mil thick polyester film and 2 mil thick silicone adhesive. They can be removed cleanly without leaving an adhesive residue. These masking tapes can withstand temperatures of up to 400°F/(204°C). They are packaged on a 3" core and are 72 yards long. These tapes are designed to be used for temporary masking purposes. RoHS and REACH Compliant.