This Brake Bleeder Wrench Set includes 7 popular sized wrenches and a 4 foot hose to allow use on virtually any car, SUV, light truck, or motorcycles brake caliper or wheel cylinder. The included sizes are 3/8", 7mm, 8mm, 9mm, 10mm, 11mm & 12mm. All are 6-point Hex Brake Bleeder wrenches. This set allows you to complete a brake bleeding service without removing the wheels and/or raising the vehicle. You can bleed brakes from the drivers seat without having to open and close bleeders. No drip design made possible by the check valve design. Tool wont bleed unless pumped. The one way check valve on the hose also eliminates air and old fluid from entering the brake system. Wrenches seal to the bleeder valve, and tighten or loosen the valves without breaking the seal. CTA part #s 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1955. Whether tuning up your 68 Corvette or changing the oil on a John Deere tractor, CTA can supply you with the tools needed to do the job. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.