Model No.:HGC2001, applying to dust cleaner, colors:green,blue,gray and more, size and length are customized PE reinforced outlet hose1- Model No.: HGC20012- Inner diamter: 28mm, 30mm or 32mm,(customized)3- Colors: gree, blue, black(costumized)4- Main materials: PVC( soft ) PE reinforced outlet hose HGC2001