76mm Internal Diameter | 4 Metre Length Operating Temperatures -60°C to +260°C 2.5mm Wall Thickness Silicone sheet with sprung steel wire integrated into wall Silicone air ducting is designed with a sprung steel wire internal support which allows the hose to be very flexible, whilst also keeping the hose from sagging. It is made from silicone coated glass fibre material giving excellent temperature resistance,, Manufacturer: ap automotive