The 4" Left Spiral PVC Dust Collector Hose by POWERTEC. POWERTEC 70111/70143/70196. A practical, safe and cost effective dust collection hose. Enhance your existing workshop dust collection and filtration systems. Length: 10 ft. (70111), 20 ft. (70143), 50 ft. (70196). Rated Safe - This PVC hose features a flame retardant construction is temperature resistant and is capable of electrostatic discharge (when grounded). It also offers exceptional resistance to chemicals along with acidic and alkaline materials. FEATURES: Featuring a 4 in. ID, this hose can easily be attached to most standard nominal 4" OD dust ports. Twice the Versatility: The hose works with an assortment of industrial and centralized dust collection systems, while the key hose clamps fit perfectly over the 4" hose - providing tight and secure clamping action. Dual Protection: Offers chemical and heat resistance for workshop safety. Two Times the Quality: The key hose clamps are constructed out of non-corrosive stainless steel, while the PVC hose is reinforced by an interior steel spring wire to deliver optimal support, durability and strength that won't fold under pressure. Product Specifications: Construction: heavy-duty Soft PVC (Polyvinyl Chloride). Reinforced Spiral Spring Steel Wire: Spring Steel Wire. Diameter: 4 in. Wall Thickness: 0.5 mm/1/64 in. Compression Ratio: 3:1.