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. Complete a brake bleeding service without removing the wheels and / or raising the vehicle. Bleed brakes from the drivers seat without having to open and close bleeders. No drip design made possible by the check valve design. Tool won't 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. Blow Mold Case with a durable foam insert. Includes the following size 6-point hex wrenches: CTA 1946 - 3/8"; CTA 1947 - 7mm; CTA 1948 - 8mm; CTA 1949 - 9mm; CTA 1950 - 10mm; CTA 1951 - 11mm; CTA 1952 - 12mm; CTA 1955 - Silicon Hose.