On cars fitted with drum brakes, a special spanner may be needed for adjusting the brake shoes. The adjuster screw is usually square, and the size varies with the car; check the size you need. Brake spanners are usually double-ended, often with a 1/4 in. head at one end and a 5/16 in. head at the other; some have a 1/4in. head and a 9mm head.
Types of brake drum adjusters A typical braking system uses disc brakes at the front of the car ...