Mayhew Tools37332 Screw Extractor Set, 5-Piece, Black Oxide Finish

American made seem to be good quality . I have other mayhew tools that are very good

I am shocked I had a massive bolt that was rust into my grill I was able to extract with these insane bits! Other bits would have sheared off but because of the square profile, they are incredibly beefy I did have to keep sizing up as I could feel the smaller ones starting to flex, but they never broke, I just followed the standard process of drilling larger and larger holes until I was able to pound in the largest boat with a hammer and torque it out. Of course I used heat as well but I was really impressed with the strength of these bits, absolutely worth their price

Want to get your broken spark plugs out? This is the set. I tried two other kinds and they failed miserably. These bite hard and twist the plug right out. Look no further.

When I heard that spark plug pop, and the insulator came out in my hands, I thought for sure I was in for an engine head rebuild. I did some research and found out the square easy out tools, where the best bet for something like this because the spiral tools tend to spread out the spark plug threads inside the hole making it harder to remove.This kit showed up within a day. The quality is exceptional. The storage pouch is high-quality. The edges of the tool were very sharp, so I knew they were going to dig in to the threads easily.Of course, the spark plug that broke off was in the most inconvenient place behind the suspension spring. So I had to use a long combination of extensions and a socket designed for square oil pan bolts. see pic. (This is on a Ford F250 so I removed the inner fender-well to gain access to the plugs, thus needing the extensions) I used gorilla tape to secure the socket and easyout bit to the extensions. I also pre-soaked the spark plug threads with PB blaster a few times a day for a few days to loosen up the corrosion. You really have to hammer the easy out in pretty good to get it to bite, and use a very stiff extension. Once I did that, it came right out. I was thrilled. I couldn’t believe it actually had come out. Hallelujah! The clouds parted and the sun shown through (well the moon since I was up til midnight messing with it)This time I made sure to put some copper anti-seize grease on the spark plug threads to make sure the dissimilar metal corrosion couldn’t occur. The combination of an aluminum head with a steel spark plug caused galvanic corrosion (look it up, it’s real) that locked the spark plug into the head. The copper anti-seize provides a barrier that allows the current to flow between the head and the spark plug threads. Highly recommend.

If they were six sided then you use use a socket and ratchet to get some leverage to get the job done. They work but a better design would make it easier.

Not just broken bolts I had a spark plugs came that came out in pieces and I had to remove the threaded portion down in a coil pack tube on a Hemi style engine and this did the job when the reverse threaded type couldn’t even get a bite. My thanks for this tool I am very happy with this purchase

Although I think this is a very well made tool, it did not perform as I'd hoped when trying to remove some stripped out oil pan Torx screws. The more traditional EZ-Out worked better.

I had 2 spark plugs that the plug came out but threads stayed in. I used second from the biggest with a 10 mm socket. Sprayed blaster night before and they came right out. Saved me about 2000.00. I highly recommend this set.