Bertech 1/4" Wide x 7.70 Yards Long High Temperature Masking Tape, 7.7 Mil Thick, Beige Crepe Paper Material, 3" Core High Temperature Masking Tape They are also known as Solder Wave Tapes They can withstand molten solder for 5-8 seconds at 500 F They are made from 6 Mil thick crepe paper with rubber adhesive Rolls are 60 yards long