... rubber insulation hose or tube ID :1/4", 3/8",1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1 ... -1/4", 1-3/8", 1-5/8", 1-7/8 ... Our insulation tube specification :Wall Thickness 3/8" ... 8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-5/8", 1-7/8 ... contact with me thank you betty 3/8" wall thickness 1.83m length superlon insulation tube ...