There are two types of screw/bolt extractors. These are for "holes" and grab internally. The other type of screw/bolt extractor grab externally. So to use this particular set, you want to use a metal or cobalt bit to drill a hole in your broken bolt. You only need to go as deep as the extractor head. One your hole is drilled, then take a hammer and gently tap one of the extrators into the hole. Then using a hardened/impact socket, rotate and loosen your broken bolt. DO NOT use an air gun or impact wrench. Do this by hand using a breaker bar. You may need to tap the extractor in a few times and repeat the process. Be patient, it will work. Also, use penetrating oil such as Liquid Wrench on the stuck bolt as well. That will help a lot. There are videos on You Tube if you need further explanation. Good luck Oscar !

Do you have any special tips for removing a soft aluminum oil drain plug? it was a torx. have drilled out a smooth 1/2 inch hole.

I have these on multiple metals and they worked perfectly every time, so they should work on your drain plug.

There is no country of origin on the case or any of the individual extractors. It’s possible something was on the sleeve. But I don’t recall anything but a plain white card stock sleeve.

Can I get two of them replaced? Broke off tip/one stripped out

You should be able to replace them because of a warranty. You can contact the seller directly for warranty information or you may be able to find warranty information on the manufacturer’s website.

Topec 25pcs Screw Extractor Set Hex Head Multi Spline Easy

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Description

🔧 Break free from stuck bolts with precision power!

CLEAR SIZE MARKINGS - Engraved sizes on each piece for quick identification and seamless workflow.
PRECISION GRIP TECH - Internal left-handed spiral design ensures a tight grip and faster, effortless bolt removal.
MAXIMUM TORQUE POWER - Hex head with multi-spline spiral design delivers superior torque compatibility with wrenches and sockets.
VERSATILE SIZE RANGE - 25 extractor sizes from 1/8" to 7/8" cover virtually every broken bolt or screw scenario.
INDUSTRIAL GRADE STRENGTH - Crafted from premium chromium-molybdenum steel for unmatched durability and corrosion resistance.

The Topec 25Pcs Screw Extractor Set is a professional-grade toolkit made from heat-treated chromium-molybdenum steel, designed to remove broken screws, bolts, and studs efficiently. Featuring 25 sizes ranging from 1/8" to 7/8", each extractor has a corrosion-resistant, precision-machined surface with an internal left-handed spiral for enhanced grip and faster extraction. Its hex head multi-spline design maximizes torque compatibility, making it an essential tool for any serious DIYer or professional mechanic.

Specifications

Manufacturer	Topec
Part number	O-EX-25
Item Weight	1.92 Kilograms
Product Dimensions	22.35 x 16 x 4.83 cm; 1.92 kg
Item model number	O-EX-25
Color	Old-version
Material	chromium-molybdenum steel
Number Of Pieces	25
Batteries Included?	No
Batteries Required?	No

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Topec 25Pcs Screw Extractor Set, Hex Head Multi-Spline Easy Out Bolt Extractor Set, Premium CR-MO Steel Rounded Bolt Remover

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