Medium weight, double ply clear PVC hose. Fully encapsulated, PVC coated, close pitch spring steel wire helix. Moderately flexible, it will accommodate quite tight curves, certainly anything associated with woodworking machinery. The inner wall is markedly smooth, aiding the flow of waste, also being clear any blockages are easily spotted. Temperature range 0°C to +70°C and able to withstand quite abrasive materials. Clockwise spiral.