Please allow 0-1mm discrepancy due to different measurement method.
Color: silver
Material: stainless steel
D(Outer Diameter) 25mm-51mm Wall Thickness: 1.5mm D(Outer Diameter) 57mm-89mm Wall Thickness: 2.0mm Size: outer diameter 19mm/0.75 in, 25mm/1.0 in, 32mm/1.25 in, 38mm/1.5 in, 45mm/1.8 in, 51mm/2.0 in, 57mm/2.25 in, 63mm/2.5 in, 76mm/3.0 in, 89mm/3.5 in