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Title: Returned after one use
Review: This was bad enough when, out of the package, this thing had no way to conect it to a wheel cylinder without reversing the check valve (unless you want air coming IN and none going out). Then it got worse - I had 4 wheels to bleed. After two wheels, the check valve didn't check anymore - this thing let air into the hydraulic system - you would think a manufacturer would not want that liability! I finally bought a silicone diaphragm check valve and 3/16" tubing from from mcmaster and made my own - for about $8.
