This is a black, chemical and abrasion-resistant blower & duct hose, featuring a 9-inch bend radius, 17-inch internal diameter, 25-foot length, and 23 maximum working pressure. Engineered for dehumidification, enclosed space ventilation, fume removal, solvent ventilation, and general ventilation. It's 25 feet long, crafted from Neoprene Coated Polyester, and offers flame-retardant and puncture-resistant properties.