#mm wall thickness

RPFF Pipe Insulation Foam Tube, 0.5 3.5 ID X 0.35 /0.59 /0.79 Thickness X 5.9 Ft Long, for Cold or Hot Pipes, Foam Tubing Insulation 1, Black

RPFF 0.5 3.5 ID Pipe Insulation Foam Tube, Foam Tubing Insulation, Pipe Insulation Tubing, Fire Retardant Waterproof Closed Cell Foam Pipe Insulation, Black