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The size of spiral screw extractors, drill bits, nut removers, multi-spline screw extractors, socket adapters (3/8'')
Usage Steps of Remove Broken Screws
Usage Steps of Remove Rust Bolts
Kolvoii 39 PCS Screw Extractor Set for Various Scenarios!
Designed for easy remove stuck, broken or screwed bolts, studs, screws and other threaded fasteners without damaging the surrounding material, avoid replacing the entire machine due to a broken screw or stud.
Chipper
Reviewed in Canada on March 6, 2025
The unit has plenty of parts, however the most important bits that work best in most situations are made of very soft metal and snap off after about 4 uses.Subsequently I have had to purchase replacement bit sets (in pouches) for $10 to keep the unit complete.The reverse drill bits are also very very soft, easily flex, bend and dull very quickly. Once bent you must straighten or toss away.
Vickie Alumbaugh
Reviewed in the United States on March 11, 2025
On first use the small screw extractor shattered. The material heat-treat process has to be wrong. I drill out broken bolts at work all the time and work as a toolmaker. I thought this would be a good set but I guess I will buy the Irwin.
Jerry D. De La Rosa
Reviewed in the United States on February 8, 2025
Excellent tool for extracting bolts after the heads have broken off. As well, these are very good for stripped heads where wrenches or sockets can no longer be used. Sturdy material!
Jim
Reviewed in the United States on February 24, 2025
Kolvoii Deep Bolt Extractor Set, 16 PCS 1/2 inch Drive ImpactNice kit for the most part. Only complaint is some of the sockets labels are not as visible as others. (See photos).Until I have a stuck bolt or nut, I will not be able to use these.Case is solid, with good finish. No burs that cut your hands. The size card is loose inside with a plastic protection sheet, but that is what the lettering on the sockets is supposed to cover. Some deviation on the sockets from manufacturing is visible on outer edges, but the main part for the drive connection and bolt-bit area are all in great shape.
Mad_Marc
Reviewed in the United States on February 23, 2025
Absolutely awesome product!!! It has absolutely EVERYTHING you’d ever need for any job! Great value as well! It has a special place in my tool chest. The diagram of which tool to use on what kind of bolt, nail, screw, is invaluable when it comes to the right tool for the right job and saving time. Thank you!
Cody
Reviewed in Canada on February 17, 2025
Good quality for a starter set! Works exactly as intended.
Customer
Reviewed in the United States on January 4, 2025
Love it been needing this for long time makes things easier now thx for great product
Hector
Reviewed in the United States on January 3, 2025
Hace su trabajo sin ningún problema
Danny Somlo
Reviewed in Canada on January 16, 2025
It did the job as I expected
Bert J Telder
Reviewed in Canada on December 9, 2024
Theres a great range of sizes available and the quality is excellent.
Bill T
Reviewed in the United States on December 6, 2024
Seems to be a good quality product
Javman
Reviewed in the United States on November 4, 2024
It almost has every you need to tackle stripped nuts and bolts. It solved my problem removing a stripped torx oil drain plug, I got to use the reversed drill first to even out the torx hole then used the right size removal bit using a hammer drill.
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