Review on Enhance Automotive Performance with 8MILELAKE 21pcs Handheld Vacuum Pump Set Tester and Brake Bleeder Test Kit by Todd Cowdrey

I was hoping to use this device to bleed my brakes. He claims the suction power is -20, but even with the tube closed, it barely gets to -10. The stroke is very short and it takes a lot of pumping to get the low suction it's capable of. It looks nice and comes in a good kit, but it's practically useless for bleeding the brakes. Eventually a friend came over to me and did the old fashioned foot-on-the-brake technique and I was done in 15 minutes after spending several hours hand pumping. My hand still hurts.