3M(TM) Scotch-Weld(TM) Bonding Film 588 13 in x 60 yd 2 Rolls/Shipper Flexible, 100 Percent Solids, Heat Activating Dry Film Adhesive is Composed of a Higher Ratio of Thermosetting Resins than 583 for High Internal Strength and Structural Type Bonds. It is composed of a higher ratio of thermosetting resins than 3M(TM) Scotch-Weld(TM) Bonding Film 583 for high internal strength and structural type bonds. The thicker caliper of this product makes it especially suitable for various splicing.