4.5 mil Painter's Grade Masking tape with a specially formulated Synthetic Rubber Based Adhesive system that provides clean removal characteristics and UV resistance - up to 10 days of outdoor exposure. Special characteristics of the adhesive system is that the peel adhesion does not increase with time, allowing for removal off a wide variety of surfaces without surface damage. Rolls are individually pillow wrapped - perfect for retail sales. Tensile: 22 lbs/in. Peel adhesion: 40 oz/in. Quick stick: 13 oz/in. Elongation: 8% 3" neutral core.

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