Would this work with a universal socket? Thanks

HI these are a 1/4" square end, as long as your universal socket is that size then yes. or even with a reducer this would work ( if your universal socket was 1/2")

Is the drive 1/4 inch (the hole that fits on the ratchet)?

YES THEY ARE 1/4" SQUARE MALE ONE END & 1/4" SQUARE FEMALE THE OTHER END & THEY PUSH TOGETHER TO MAKE UP DIFFERENT LENGTH COMBINATIONS BUCKO COVENTRY

Can this be used to extend a standard wrench to create leverage in order to unscrew something very tight? (a bike cassette)

They won’t create leverage they will just give you extra length , like if you have a nut down a tight hole , so they extend your reach.

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Amtech I3700 3 Piece 6mm (1/4'') Short Extension bar Set

Amtech I3700 3 Piece 6mm (1/4'') Short Extension bar Set

Product ID: 50704085

Details

Brand
Amtech
Material
Plastic Metal
Item length
225
Item weight
0.2 Kilograms
Item package quantity
1

📏3 precision extension lengths

🧰compact & toolbox-friendly

🛠️drop forged heat-treated steel

₩16775

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Description

🛠️ Extend Your Reach, Elevate Your Craft!

BUILT TO LAST - Drop forged and heat treated steel with polished chrome finish ensures durability that outperforms the rest.
ERGONOMIC COMFORT - Designed for ease of handling during extended use—work smarter, not harder.
COMPACT POWERHOUSE - Slim, lightweight design fits effortlessly into any toolbox or cabinet for on-the-go professionals.
PRECISION IN EVERY INCH - Three extension bars (75mm, 150mm, 225mm) tailor your reach perfectly in tight spots.
VERSATILE COMPATIBILITY - Ideal for 6mm (1/4'') fasteners—your go-to set for both amateur and pro projects.

The Amtech I3700 3 Piece 6mm (1/4'') Short Extension Bar Set offers three precision lengths (75mm, 150mm, 225mm) crafted from durable drop forged, heat-treated steel with a polished chrome finish. Ergonomically designed for comfort and compact enough for easy storage, this set is perfect for professionals and DIY enthusiasts working in confined spaces. Note: Not compatible with impact drivers.

Specifications

ASIN	B003XKRUDO
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	201,189 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,523 in Socket Sets
Colour	Transparent
Compatible fastener range	0.25 inches
Customer Reviews	4.5 4.5 out of 5 stars (1,594)
Date First Available	1 July 2010
Finish	Polished
Guaranteed software updates until	unknown
Head Style	Fixed Square
Included Components	Amtech I3700 3Pc 1/4'' Short Extension Bar Set
Item Package Quantity	1
Item Weight	200 g
Item model number	AM-I3700
Manufacturer	DK Tools LTD
Material	Metal, Plastic
Measurement System	Metric
Number of Pieces	3
Part Number	I3700
Power Source	hand_powered
Product Dimensions	33 x 7 x 1 cm; 200 g
Size	One Size
Usage	Amateur, Professional

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₩16775

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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Received my product in pristine condition. Great service overall.

1 month ago

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