Damaged Screw Extractor Set, 22 PCS Stripped Kit for Broken Bolt All-Purpose HSS Remover Set with Magnetic Extension Bit Holder & Socket Adapter, Silver

I broke the head off a screw on my bikes timing cover, I was so irritated and could not get it out of my head. This kit came over night and I simply used the smallest reverse drill, and did not even have to change over to extractor before the screw backed out. Amazing product that I’ve never used before and took less than 5 min to work perfectly. Worth every penny!!!! For those wondering, the machine screw I was taking out was a 8/32 and I had 5/8” thread locked in. These are for very small screws

Nada más frustrante que un tornillo pasado o barrido… hasta que usás este set. Me salvó en más de una ocasión. Funciona con taladro, y con un poco de paciencia saca hasta los tornillos más tercos.La presentación viene ordenada en su estuche, con varias medidas, lo cual lo hace versátil para diferentes tipos de tornillos y pernos. Incluso en tornillos oxidados funcionó bastante bien.Eso sí, no hay magia: hay que usarlo con cuidado, a velocidad baja y con presión firme. Pero si hacés eso, cumple con creces. Recomendado si sos de arreglar cosas o trabajás con herramientas.Una herramienta que no sabías que necesitabas hasta que te salva.

This screw extraction set has a huge number of positive reviews. My personal experience with it has been rather disappointing.When an M8 screw broke off flush inside our HF wood chipper-shredder's rotor assembly, I ordered this screw extraction set. After receiving the set yesterday, I drilled a #3 size hole as directed. The instructions, written in poor English, were somewhat adequate. These are reverse drill bits, so they have to be drilled counter-clockwise and "slowly." The recommended RPM is less than 200, but there's no way you'll know at what speed your drill is actually rotating. I used a Sears 19.2V battery-powered drill set on Low. Would cutting oil help the process? Alternating smaller #5 and then the #3 bits eventually resulted in a hole deep enough for the extraction bit, but it took a good 20 minutes of drilling. I inserted the extraction bit into the hole using the same battery-powered drill set on low and the extraction bit immediately snapped off with the torque set at about 3/4 of the drill's maximum, almost flush with the screw. I couldn't get the extraction bit out. A picture of what's left of that bit is attached. Now, it appears that I'll have to drill out not just the screw but the the extraction bit as well. Ain't that just great?Getting nowhere using a hand electric drill, I removed the rotor from the shredder (which required a gear puller) and placed it in my Jet drill press. Using cutting oil, I quickly wore out 2 of those "15X" drill bits that are supposed to be able to handle drilling into metal using 3/16" and 1/4" sizes. I was only able to make a small dent into the broken off bit. At that point, I gave up and ordered a new rotor from HF.And then, just yesterday, I received in the mail a post-card offering me a $30 Amazon gift card for reviewing this product. COULD THAT BE THE REASON FOR THE HIGH NUMBER OF POSITIVE REVIEWS?

I had a number of M3 flat head screws liberaly slathered with thread locker and with Philips heads that no driver or bit would properly engage. I got three out by finding one off-spec Phillips bit that did engage with no slop, heads were ruined, was going to replace them all anyway. I found this set online with generally good reviews, came in today. I drilled all 4 remaining screws and three backed right out, the supplied drills worked fine, really soft hardware. First one didn't make it, drilled a little too deeply, tore the head right off. So that one gets drilled and maybe the thread remains picked out using dental tools, otherwise gets a tap run in. These are short screws, 4-6mm, and no hardware store extractor is going to work. Flush with the cover plates, no way to grab them with pliers or vise grips. Comes in a very nice locking plastic box, everything is labeled on the foam bit holder. Bits themselves have no markings. Needs some experimentation to see which bit combination works best. Tearing the head off the one screw didn't keep me from pulling the cover, other screw came right out. So I could make the needed adjustment. Couldn't have done it without this set. One star off for no size markings on the bits. But nothing broken, have always broken screw extractors when removing busted bolts.

Every shop should have a set. Good quality.

Overall, it didn't work for me. I was drilling into a screw shaft after the head broke off. It was inside an old plastic electrical box screw hole.Pros: Nice packaging, very nice case to prevent these from getting lost or misplaced. Clear labeling inside the case.Cons: Unsure of the screw material I was drilling into, but it was stronger than the bits' material. As you can hopefully see in my second picture, it misshaped the drill threads instead of taking more material out of the screw. So I was unable to extract the screw and instead shaved the plastic around the screw and used vice grips once it was exposed. The instructions were also unclear and confusing. Mine actually did not come with the instructions I saw on someone's video of the product. I looked at the listing, and the bits were mislabeled, it wasn't clear which direction to use the drill. Then I searched how-to videos for other extractor sets and used the drill in reverse for both drilling and extraction. I then tried the drilling bit with the forward function of the drill, that didn't work very well either. The magnet for the extension bit holder is also very weak, which leads the bit to wobble while drilling and degrades the performance of the tool.