1) rubber lining , textile double jacket 2) flexible, easy rolling and light weight 3 ... rolling and light weightSize: 1"( 25mm) 1.5" (40mm), 2" (50mm), 2.5" (65mm), 3" (80mm), 4" (100mm), 6'' ... Working Pressure ( Bar)1.5"4038+2 -08, 10, 13, 162.0"5051+2 -08, 10, 13, 162.5" ... 6563.5+2 -08, 10, 13, 163.0"8072.6+2.5 -08, 10, 13, ... 164.0"100101.6+2.5 -08, 10, 13, ...