... and shielding effectiveness to reduce attenuation, complying with RoHS standard.3.Dimensions NameSingle sided bonded aluminum mylar tape (AL+PET+EMAA ... (1.5in) or 53.5mm(2.1in) or 76mm(3.0in)Outer diameter250mm-650mmColorSilver,Blue,Golden NameDouble sided bonded aluminum ... (1.5in) or 53.5mm(2.1in) or 76mm(3.0in)Outer diameter250mm-650mmColorSilver,Blue,Golden4.ContactMobile:86-15168349992TEL:86 ...