Performance Tool W80570 Valve Lapping Tool with Heavy Duty Rubber Suction Cups and Hardwood Handle - Small Size for 5/8-Inch and 3/16-Inch Valves

I had never lapped valves before, but it turned out to be super easy. These suction cups worked great, and if I added a little oil to them they hardly ever slipped off the valve. 10/10

Took works great for lapping valves. Super simple design and if you need guidance you can find tons of information on how to use them.

the suction can be dull at times but just get in the groove and find a good spot on the valve and soon you will be grinding like a pro! good product!

I was able to use these to grind the valves on my KT17 engine for my Wheel Horse 417A. I found that I could pop off the suction cup and put it on a 3/8" drive drill and grind them a lot faster than doing it by hand! They worked fine by hand as well, I'm just not that patient.

I have some that are 30 yrs old. Saw the great price, So I ordered them Just like my old ones ,hope they last 30 yrs.

As a concept this are great but the ones I got were not really very good. Maybe it's the type of valves I was working on but they would not hold. I had to use double sided Gorilla tape, the clear kind, to get these to work but even that failed after a few attempts. I finally just used the tape to attach the old valves to the top of the new valves and used a drill to lap them. It worked perfectly!

This is one of only a few tools that I have no negative issues with. Works great. Should last for many years.

This product doesn’t work what so ever! The suction is awful and I have never been more disappointed of a “tool” in my life.

Very quick shipping. Looks to be just what I need

Works as described

Perfecto funcionan muy bien gracias

Buen agarre

This tool saved me a great deal of time !! My 16 lifters were really stuck ! Had I not purchased this wonderful tool , I have no doubts that I would still be out in the shop trying to pull those lifters , great too, !