The OEMTOOLS 22505 1L Pneumatic Brake Bleeder and Auto-Refill Bottle streamlines and simplifies the process of flushing and bleeding your brake fluid system. Bleeding the brakes is time-consuming and inconvenient if you don't have someone to lend a hand. Designed to use pneumatic pressure, this brake bleeder kit can be easily operated by one person, letting you work in two places at once. From start to finish, you can hook your brake bleeder up to any standard shop air supply to vacuum out old brake fluid into the 1 liter reservoir. When it comes to fluid replacement, the automatic refill brake bleed bottle uses gravity and a simple fastener to secure itself to your master cylinder. Simply flip the switch to let fresh brake fluid flow into your vehicle while you move to each caliper with your vacuum brake bleeder. Lock the trigger in place and hang the brake fluid bleeder kit by its hook if you need to step away for uninterrupted brake fluid flushing. Pump the brakes on complicated processes with your OEMTOOLS 1L Pneumatic Brake Bleeder.