What are the actual sizes of the flare nut wrenches one gets?

1/4" x 5/16" FLARE NUT WRENCH 3/8"X7/16"FLARE NUT WRENCH 1/2"X9/16"FLARE NUT WRENCH 5/8"X11/16"FLARE NUT WRENCH 8MM X 9MM FLARE NUT WRENCH 10MM X 12MM FLARE NUT WRENCH 13MM X 14MM FLARE NUT WRENCH 15MM X 17MM FLARE NUT WRENCH 19MM X 21MM FLARE NUT WRENCH

Do these wrenches have a grove cut out inside the square drive hole so as to be heald by an extention bar?

Not quite sure what your question is in regard to, but no they just have a square hole like on any socket. Anything you can stick into a socket (a ratchet, an extension etc) will fit into them. I used a 3/8" extension on the size I needed and the wrench did not fall off if that's your question.

Using them for brake lines, how well does a 3/8 ratchet clear the opening? Do you have to use a 3/8 breaker bar with them?

Did not use on brake lines. I used them on power steering lines

Are they offset ? If you flip them over can you get a different bite on the fastener

They are offset but clearance around nut or bolt may inhibit how far you are able to rotate with each bite. I changed out a power steering high pressure hose with mine. It was tedious but did the job.

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SUNEX TOOLS 9710M 3/8-Inch Drive Metric Crowfoot Flare Nut Wrench Set, Size-10 - Size 19, 10-Piece

SUNEX TOOLS 9710M 3/8-Inch Drive Metric Crowfoot Flare Nut Wrench Set, Size-10 - Size 19, 10-Piece

Product ID: 5448701

Details

Brand
Sunex Tools
Color
Original
Item Length
0.75 inches
Item Weight
1.3 pounds
Material
Alloy Steel

💪drop forged alloy steel strength

🔧10-piece metric sizes

⚙️3/8-inch drive compatibility

¥13109

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Description

🔧 Unlock pro-level precision with every turn!

COMPACT ORGANIZED - Mounted on a convenient storage rail to keep your workspace clutter-free and tools accessible.
SLEEK POLISHED FINISH - Fully polished surface resists corrosion and looks sharp in your toolkit.
BUILT TO WITHSTAND TORQUE - Crafted from drop forged alloy steel for unmatched durability under pressure.
VERSATILE FLARE NUT DESIGN - Specialized head style ensures secure grip on flare nuts, reducing slippage and damage.
PRECISION FIT FOR EVERY JOB - 10 essential metric sizes (10-19mm) cover your automotive repair needs flawlessly.

The SUNEX TOOLS 9710M is a 10-piece metric crowfoot flare nut wrench set featuring sizes 10 to 19mm, designed for automotive repair. Made from polished drop forged alloy steel, it offers exceptional strength and durability. The set includes a 3/8-inch drive and comes mounted on a handy storage rail for easy organization and quick access.

Specifications

ASIN	B0002SRJF4
Best Sellers Rank	#108,690 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #106 in Open-End Wrenches
Brand Name	Sunex Tools
Color	Original Version
Customer Reviews	4.7 4.7 out of 5 stars (2,719)
Finish Types	Polished
Global Trade Identification Number	00613364397107
Head Style	Flare Nut
Included Components	Item
Item Length	0.75 inches
Item Weight	1.3 pounds
Manufacturer	SUNEX TOOLS
Manufacturer Part Number	SUN9710M
Manufacturer Warranty Description	Lifetime
Material Type	Alloy Steel
Model Number	9710M
Number of Items	1
Operation Mode	Mechanical
Package Quantity	1
UPC	031112655802 522536739853 782386165077 043934996544 723434637535 613364397107 014444898864
Unit Count	1 Count

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¥13109

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

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