Bleeding your brakes keeps your brake pedal from feeling spongy and is the safe thing to do when working on brakes. Air gets trapped in the brake lines when changing the brakes. It is important to pump the brakes and drain the fluid until the air comes all out. Brake fluid should be replaced by brake bleeding at least every 2 years. These tools make it a one man job and are a fast and easy method of removing air from your brake's hydraulic lines. Bleeding a master cylinder seems like it takes forever, but it is a very important thing to do for safety reasons.

Brake Bleeding Kits - Brake Bleed Tools

Mityvac Brake Bleed Pump Rebuild Kit, Mityvac Brake Bleeding Kit, Brake Bleeder for Round Master Cylinders < 3-1/4andquot, GM Brake Bleeder Wrench rear Cyl 1978 later,