10 Colour For BMW E39 530d 525d Silicone EGR Intercooler Turbo Boost Hose Kit. If you need to change the color, pls leave a note. 100% high quality silicone and nylon. Thickness: 4 Ply / 5.4mm. All hoses as shown. In the the first picture. We promise to provide products with low price and excellent quality. Quality guarantee period:1 year. Any product quality problems will be solved 100% for you. Your satisfatation is important to us, please leave feedback to us after you received the item.