How do you remove the extractor from the fastener? Its seriously stuck now that it's done it's job

Put part in vise or vise grips, then turn extractor clockwise.

will this work on left handed treads?

No they are designed for right hand treads only

Are they really solid cobalt or just coated in cobalt?

In my experience, cobalt drill bits seem to be anywhere from 5% to a high of 8% cobalt (called m42) so I think you're very unlikely to ever come across solid cobalt bits. M42 bits are usually really good bits but they are normally pretty expensive. Nevertheless, I really would like to know what the percentage of cobalt is on this set because I didn't see it mentioned. Because broken bolts which need to be extracted can sometimes be made of pretty hard material, it would be really nice to find some good m42 left handed bits.

will it fit a laptop screw?

As it says the smallest size is 1/16". If the screw is smaller than that then the answer is "No". If I were drilling out the screw myself I would put that bit in a drill press to insure drilling completely vertical to the laptop.

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NEIKO 04204A Hex-Head Multispline Screw and Bolt Extractor Set, Easy-Out Extraction, Broken Remover, Stripped Fastener Tool, 1/8 Inch to 7/8 in 1/32-Inch Increments, CrMo, 25 Pieces

NEIKO 04204A Hex-Head Multispline Screw and Bolt Extractor Set, Easy-Out Extraction, Broken Remover, Stripped Fastener Tool, 1/8 Inch to 7/8 in 1/32-Inch Increments, CrMo, 25 Pieces

Product ID: 274430447

Details

Brand
Neiko
Cutting angle string
118 Degrees
Finish type
Steel
Material
Chrome Steel
Shank type
Hex

🌀Left-hand spiral teeth for aggressive grip & fast removal

🔩25 precision extractors, 1/8" to 7/8" in 1/32" increments

⚙️CrMo steel for unmatched durability & toughness

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754 zł

Duties & taxes included

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Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

READY FOR ANY WORKSPACE - Compact, durable case for easy transport—perfect for home, garage, or on-site jobs where time is money.
PRECISION FIT FOR EVERY JOB - 25-piece set covers 1/8" to 7/8" in ultra-fine 1/32" increments—never struggle with the wrong size again.
AGGRESSIVE SPIRAL TEETH GRIP - Left-hand spiral flutes bite deep into damaged fasteners, speeding up extraction and reducing frustration.
BUILT TO OUTLAST OUTPERFORM - Crafted from premium chrome molybdenum steel, engineered to withstand the toughest extraction challenges.
MAXIMUM TORQUE MINIMAL EFFORT - Hex-head multispline design ensures superior wrench compatibility for effortless, high-torque removal.

The NEIKO 04204A is a 25-piece hex-head multispline screw and bolt extractor set made from premium chrome molybdenum steel. Designed with left-hand spiral teeth and precision increments from 1/8" to 7/8", it delivers superior grip and torque for fast, reliable removal of frozen, broken, or stripped fasteners. Packaged in a durable case, it’s the ultimate tool for professionals and DIYers aiming to tackle tough extraction jobs efficiently.

Specifications

ASIN	B01KN9YVWA
ASIN	B01KN9YVWA
Best Sellers Rank	#34,859 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #38 in Tap Extractors
Brand Name	Neiko
Customer Reviews	4.4 4.4 out of 5 stars (1,243)
Customer reviews	4.4 4.4 out of 5 stars (1,243)
Cutting Angle String	118 Degrees
Date First Available	22 October 2016
Finish Types	Steel
Global Trade Identification Number	00816914020672
Included Components	Extractor Set, Multi-Spline Screw Set
Is Discontinued By Manufacturer	No
Item Length	1.06 Inches
Item Type Name	Hex Head Multi-Spline Screw and Bolt Extractor Set \| 25 Piece \| 1/8” to 7/8” in 1/32” Increment \| Cr-Mo
Item model number	04204A
Manufacturer	Neiko
Manufacturer	Neiko
Material Type	Chrome Molybdenum Steel
Model	04204A
Number of Flutes	2
Number of Pieces	25
Package Dimensions	23.39 x 16.79 x 5.41 cm; 1.99 kg
Part Number	1
Set Name	Neiko Screw and Bolt Extractor Set
Shank Type	Hex
Surface Recommendation	metal, concrete, plasterboard, stone, tile
Tool Flute Type	Spiral
UPC	816914020672
Unit Count	1 Count

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