will these work on 1/4" corroded stainless steel screws?

I just tried to use them to remove some 1/4-20 stainless flat head screws that were corroded into a piece of aluminum. The #2 tool, which is spec'd for 1/4" fasteners, broke with very little effort. Since the heads were big enough, I then tried to use the #4 tool, which is supposedly strong enough to remove 3/8" fasteners, and it broke too. I don't expect miracles from these tools but I do expect that they would strip the fastener head before breaking themselves. I consider this a design flaw and would not recommend them for really tough jobs.

I can't figure out what grade bolts are for license plates. I have 4 of them with broken heads. Is this kit strong enough?

license plate bolts should not be any heavier than grade 4These extractors are the greatest, I removed broken steel bolts that the head had stripped out-follow the instructionsthey are amazing!!!!

Need this to take the bolts out from my fender. Is this strong enough?

They should be strong enough, I have never had a problem with any of the Grabit products. I have used it to pull out stripped bolts off my old motorcycle.

I have an interior threaded pipe I need to remove that is th edrain for my air compressor. I snapped it off. It's inside diameter 5/16".

5/16 is too large for these, a standard extractor is tapered it's entire length, these aren't.

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Alden 8440P Grabit Pro Broken Bolt and Damaged Screw Extractor 4 Piece Kit

Product ID: 280159124

Details

Brand
Alden
Finish type
Black Oxide
Item length
10.5
Material
High Speed
Number of pieces
4

🎯Self-centering tip for precision

⚙️Dual-step drill & extractor combo

🛠️Tempered twice for extra durability

€ 81.78

Duties & taxes included

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Extract like a pro—never get stuck again!

BUILT TO LAST - Tempered twice and crafted from premium M2 High-Speed Steel for multiple extractions per bit.
MADE IN THE USA - Top-tier quality and reliability you can trust, proudly manufactured stateside.
VERSATILE SIZE RANGE - Four bits cover screws #4 to #24 and bolts up to 3/8", handling any job with ease.
TWO STEP EXTRACTION POWER - Drill and extract in one seamless motion—no extra tools needed.
PRECISION SELF CENTERING TIP - Eliminates walking or wandering for flawless screw and bolt removal.

The Alden 8440P Grabit Pro Kit features four dual-ended, M2 HSS bits designed for quick, precise removal of broken or damaged screws and bolts up to 4" long. Its self-centering drill tips prevent slipping, while the tempered steel ensures durability for multiple uses. Compatible with quick-change chucks and various screw drives, this USA-made kit is a must-have for professionals seeking efficient, reliable extraction.

Specifications

ASIN	B001A4CWHO
ASIN	B001A4CWHO
Best Sellers Rank	#88,927 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #107 in Tap Extractors
Bit Compatibilities	drill, impact driver, nut driver
Bit Set Composition	Bit Set
Brand Name	Alden
Customer Reviews	4.2 4.2 out of 5 stars (1,349)
Customer reviews	4.2 4.2 out of 5 stars (1,349)
Date First Available	10 August 2012
Drive Bit Application	metalworking
Drive Bit Shank Style	cylindrical
Drive End Style	Hexagonal handle
Drive System	Phillips, Slotted, Hex, Torx, Tri-Wing, Pozidriv, Frearson
Finish Types	Black Oxide
Global Trade Identification Number	00727708084407
Included Components	Plastic case & 4 Professional Extractor Bits
Is Discontinued By Manufacturer	No
Item Length	10.5 Centimeters
Item model number	8440P
Manufacturer	Alden
Manufacturer	Alden
Manufacturer Part Number	8440P
Material Type	High Speed Steel (HSS)
Model Number	8440P
Number of Items	1
Number of Pieces	4
Product Dimensions	20.32 x 10.16 x 2.54 cm; 109 g
Set Name	Broken Bolt and Damaged Screw Extractor 4 Piece Kit
UPC	786830337782 795871624188 744211231548 727708084407
Unit Count	4 Count

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