Automatically refills the brake fluid reservoir during brake bleeding Features: Base plate retaining clip provides positive attachment to all master cylinder reservoir types Positive venting system supplies unbroken, continual fluid flow Height adjustment allows user to maintain correct fluid level on all reservoir types On/Off tap allows installation and storage without drips or spills Suitable for use on any level controlled re-filling application (eg clutches) Specifications:Container capacity: 600ml (20 Fl oz.)