Single Layer Ducting Hose from Automotive Plumbing Solutions (APS). These hoses are constructed from flexible, temperature resistant black neoprene or brown silicone and feature a wire helix to prevent kinking and ensure air flow even where sharp bends are used.APS Single Layer Ducting Hose is the perfect solution for brake ducts, air intakes, cockpit ventilation and other low pressure / vacuum applications.Black - Neoprene is suitable for temperature ranges from -50 up to +150° CBrown - Silicone is suitable for temperature ranges from -80 up to +310° C. This is suitable for high temperature applications like ducting air to brakes.Clamping down ducting hose can be extremely difficult with a standard hose clamp. For this reason, a specific ducting clip is available separately and in a wide range of diameters.Sold in 1 metre lengths and can be supplied in continuous lengths up to 4 metres long.