Item Specific: Material:Polyimide Width: 10/12/15/18/20/25/30mm Length: 30m /108 ft ( 5 ft length) Thickness:0.05mm Can withstand max temperature:280 Brand new and high quality. One-side Self-adhesive. High insulation, high temperature resistance, acid and alkali-resistance, low electrolysis, mechanically sound, crocking resistance, tear-resistance, without rest on surface when tear. It's with good performance of adhesive, docile and obedient, solvent resist, no infiltrating solder, no glue rest. Widely used for phone batteries packing, coil insulation and high temperature masking, gold finger protect when PCB SMT soldering.