... 4 layerSteel wire: 304material; separation distance:10mmInner Wall:Transparent;smooth;Valcanized silicone,embedded 304 steel wire ... protection Under wear and high temperature Durable,No deformation Inner diameters(ID) starting from 3mm to 32mm; ... ~ 260 degreeFabric:Glass fibre wireInner wall:Transparent,smooth,Vulcanized silicone;Outer wall:Transparent,smooth,Vulcanized silicone;easily cleaned ...