self fusing electrical tape used in steel structure building colorbond for waterproof and sealing, bonding, damping and noise reself fusing electrical tapeThickness:0.5mm,0.75mm,0.8mm,1mm Roll length: 3m, 5m, 9.1m, 10m Roll width: 19mm, 25mm, 38mm, 50mm Core: 38mm dense plastic Packaging:PP bag and white little box RECOMMENDATIONSCare..