3/8" x 60 yds. Intertape - RG3 Filament Tape. This multi-purpose tape is considered the industry workhorse. PET polyester film backed tape. Adhesion to steel 41 ounces per inch. Thickness 4. 9 Mil. Elongation at break 3%. Case of 96.SHPT912003. T912003. Intertape Intertape RG3 Filament Tape.