Review on Lisle 10900 Brake Bleeder Wrench by Mark Ponnusamy

This key is used to open the exhaust valves. However, care must be taken that the bleeder is not a metric size as the tool is designed for inch sized bleeders. The length of the handle gives you the leverage you need to open and remove the old exhaust valve. This is a hex wrench best suited for small hex sizes as it prevents rounding of the hex corners. All in all, it's a well-made instrument.