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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🛠️ Extract like a pro—no broken bolts left behind!

VERSATILE SIZE RANGE - Handles screws #4 to #24 and bolts up to 3/8", covering all your common fasteners.
COMPACT READY TO GO - Comes in a sleek black oxide case, perfect for on-the-go pros and DIYers alike.
BUILT TO LAST WITH M 2 HSS - Twice-tempered, American-made steel ensures multiple extractions per bit without wear.
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 removal every time.

The Alden 8440P Grabit Pro is a premium 4-piece extractor kit featuring dual-ended bits with burnishing and threaded tips. Designed for quick, precise removal of broken or damaged screws and bolts up to 3/8" across multiple drive types, it boasts a self-centering drill tip and twice-tempered M2 high-speed steel construction. Made in the USA and housed in a durable black oxide case, this kit delivers professional-grade reliability and efficiency for every extraction challenge.

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₨1810

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Excellent communication throughout the order process. Product is perfect.

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Manufacturer	Alden
Part number	8440P
Item Weight	109 g
Product Dimensions	20.32 x 10.16 x 2.54 cm; 109 g
Item model number	8440P
Size	S
Color	Black Poly case
Finish	Black Oxide
Material	High Speed Steel
Item Package Quantity	1
Number Of Pieces	4
Compatible Fastener Range	Hex, Phillips, and square drive screws and bolts up to 3/8"
Included components	Plastic case & 4 Professional Extractor Bits
Batteries Included?	No
Batteries Required?	No

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

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