Weatherproofing WrapFast Tape, Butyl Tape on Elastomer Carrier Each kit includes two rolls and instructions. Color: Black ; Dimensions: 2-1/8 x 5ft (per roll) ; Odor: None Specific Gravity: 1.08 +/- .05 ; Elongation: 300% Shear Strength: 15 PSI min ; Peel Strength: 3 PSI min ; Tensile Strength: 50 PSI max Shelf life: 10 years