The SW Stahl wrench has sizes of 19 mm and 21 mm. Additionally, the open-end wrench features a flexible joint on both sides, allowing for work in hard-to-reach areas. This wrench with a hexagonal profile is specifically designed for working on brake lines. It is also ideal for fittings on air conditioning systems, hydraulic lines, and power steering. For many fittings on the brake system, it is advisable not to replace the SW Stahl brake line wrench with another type of wrench, such as an open-end wrench. A brake line wrench is best suited for tasks such as loosening fittings on the master brake cylinder, brake calipers, or wheel brake cylinders due to its special shape. Using other wrenches poses the risk of damaging the screws. The brake line wrench adapts better to the fitting due to its unique hexagonal profile, making it more gentle on the material. Our line wrench is made from high-quality chrome vanadium steel. It features a special alloy, where the addition of chromium and vanadium creates a composition that is particularly distinguished by its hardness and strength compared to other steels.