Nedd a air compressor and make sure the black boots on end of hose's are pushed all the way on bleeder nipples. Good product.
BikeMaster Vacuum Brake Fluid Bleeder
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makes bleeding brakes super easy. I roadrace motorcycles and change my fluid frequently. Using a manual pump is a messy pain in the @$$. This pump cuts the time and effort plus it's costs 1/3 of comparable automotive vaccum pumps.
Hook it up, pull the trigger, open the bleeder, pump the brakes. You're done when the air bubbles stop. Keep the fluid topped off. Major time saver over doing it manually.
Great and easy to use brake bleeder! The dual line synchronous bleeding is awesome for time saving efforts. The only caution I throw to the wind is that this bleeder does require an air-compressor to work!!! It did not say this in the description anywhere!!!! Other than that, usual good BikeMaster quality, not awesome, but far from cheap and useless.