Review on 🔧 WINTOOLS Valve Lapping Pro Tool Attachment Car Repair Kit with 4 Suction Plates by Grant Nordstrom

With 4 reinforced cups and insulating drill. Clean the cups and valves with lacquer thinner and off you go! I've seen bad reviews that it doesn't work. There are no instructions included so I've included a short video to show you how it works. This is mechanical lapping and requires more frequent performance checks. If you don't check progress more often, you may need new valves and seats! Overall I think the price is reasonable. I'm not sure if the internal mechanism is metal or plastic. It remains to be checked!