QLINE® 690B is a 100% VOC FREE water based bitumen underbody corrosion protection coating that provides excellent sound deadening properties. After curing QLINE® 690B forms a very durable tough and elastic film that delivers very good stone chip resistance. It is commonly applied to chassis, wheel-housings and side-skirts of cars, trucks, buses and coaches. QLINE® 690B is very effective when used with QLINE® 290A to produce an underbody duo layer coating. Available sizes: 20 Litre Pail, 208 Litre Barrel. 1 x item of the specified size supplied ­you can increase the order quantity on the cart page if required.