Our customer ask for IIR tube. The specs as follow: Matl: Butyl, 70-80 Shore, Black ID: 2.5 mm (.100 inch) Wall: 1.4 +/- 0.2 mm (0.055 +/- 0.008 inch) QTY: 10,000 ft. Pls send us your quotation and the informations of your copmany to our email address.