3.6 mil (0.09mm). 60 micron film. A biaxially oriented polypropylene tape, coated with a PREMIUM GRADE Solvent Based Acrylic Adhesive. Adhesion: 36 oz/in. Tensile: 38 lbs/in. Elongation at break: 200% Temp. resistance: 32ºF to 150ºF. Its strong adhesion to cardboard and high tensile strength makes it an excellent choice for extremely demanding packaging needs. 3" neutral core/carton.

Mill:

• A "mil" is a unit of thickness equal to one thousandth of an inch. 
• To convert mil to inches take mil & divide by 1000. 
• Thus, a 2 mil bag would be .002 inches thick.
• Example: Ex: 2 mil/1000 =.002 inches