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 Pro Grabit Broken Bolt and Damaged Screw Extractor 4 Piece Kit - Made in the USA

Alden 8440P Pro Grabit Broken Bolt and Damaged Screw Extractor 4 Piece Kit - Made in the USA

Product ID: 4353144

Details

Brand
ALDEN
Finish Type
Steel
Number of Items
1
Number of Pieces
4
Unit Count
1.0 Count

🎯Self-centering tip

🛠️2-in-1 drill & extractor

🇺🇸Made in USA, M2 HSS steel

286.93 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Extract Like a Pro, Save Time Like a Boss!

BUILT TO LAST - Crafted from premium M2 high-speed steel, engineered for durability and peak performance.
NO PREP NO HASSLE - Skip grinding or center punching—start extracting broken bolts instantly.
LIFETIME CONFIDENCE - Backed by Alden’s lifetime warranty—repair with zero risk and total peace of mind.
EFFORTLESS ALIGNMENT - Self-centering drill tip eliminates wandering, ensuring a perfect grip every time.
DUAL ACTION PRECISION - Two-step drill bit and extractor combined for seamless fastener removal—no extra tools needed.

The Alden 8440P Pro Grabit Kit is a 4-piece, USA-made extractor set featuring a unique two-step drill and extractor combo with a self-centering tip. Constructed from high-quality M2 high-speed steel, it enables quick, precise removal of broken bolts and damaged screws without additional prep work. Trusted by professionals and backed by a lifetime warranty, this kit delivers reliable, efficient fastener extraction for both home and industrial use.

Specifications

Asin	B001A4CWHO
Best Sellers Rank	#40,906 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #52 in Tap Extractors
Brand Name	ALDEN
Customer Reviews	4.2 4.2 out of 5 stars (1,482) 4.2 out of 5 stars
Finish Types	Steel
Global Trade Identification Number	00727708084407
Included Components	Plastic Case
Manufacturer	Alden
Manufacturer Part Number	8440P
Manufacturer Warranty Description	90 day limited warranty.
Model Number	8440P
Number Of Pieces	4
Set Name	Alden 8440P Pro Grabit Broken Bolt and Damaged Screw Extractor 4 Piece Kit
Unit Count	1.0 Count
Upc	786830337782 795871624188 744211231548 727708084407

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