3M™ Saturated Glass Cloth Tape 90 is a white woven glass cloth tape coated with a rubber, thermosetting adhesive. Saturated for a stiffer backing, it offers high mechanical strength and high temperature resistance. It works well with electrical insulating resins and varnishes. 1/2" x 60 yards on 3" core. Well suited for stick- and bobbin-wound coils and transformers as well as end turns and connections in motors.