Do these have the notch to lock onto quick release ratchets?

Yes they do, they work good on the couple quick release ratchets I own.

What is the difference between 81200D and 81200?

the set 81200D is the standard 3/8 drive extension bars there is a set 81201 which is the 3/8 wobble extension bars. there is no set 81200 on the gearwrench website

what are the lengths? thanks!

If you scroll don the page on Amazon, you will see the sizes listed: "The KD Tools 4-Piece 3/8-Inch Drive Extension Set includes 1-1/2-inch, 3-inch, 6-inch, and 12-inch extensions."

Will it take 98 foot pounds. Just broke an old one.

I personally would use a half-inch drive 3/8 is a little small for hundred foot pounds

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GEARWRENCH 4 Pc. 3/8" Drive Extension Set, 1-1/2", 3", 6" & 12" - 81200D

GEARWRENCH 4 Pc. 3/8" Drive Extension Set, 1-1/2", 3", 6" & 12" - 81200D

Product ID: 285459598

Details

Brand
GEARWRENCH
Finish type
Polished
Item length
12 Inches
Material
Alloy Steel
Number of pieces
4

✨Full polish chrome finish resists corrosion

📏4-piece length range 1.5" to 12"

🛠️3/8" drive for versatile socket fit

S$89

Duties & taxes included

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Description

🛠️ Extend Your Reach, Elevate Your Craft!

SLEEK CHROME FINISH - Bright, polished surface not only looks sharp but wipes clean easily and resists rust.
NONSLIP KNURLED GRIP - Engineered for maximum control, even with greasy hands—work confidently every time.
SECURE SOCKET RETENTION - Ball detent mechanism locks sockets firmly, so you never drop a tool mid-task.
DURABLE ALLOY STEEL BUILD - Crafted to withstand heavy use, ensuring longevity in your professional toolkit.
PRECISION LENGTHS FOR EVERY JOB - From tight spots to deep recesses, 1.5" to 12" extensions cover all angles.

The GEARWRENCH 4 Pc. 3/8" Drive Extension Set offers four precision lengths (1.5", 3", 6", 12") made from durable alloy steel with a polished chrome finish. Featuring a knurled grip for slip resistance and a ball detent for secure socket retention, this set is designed for professional-grade performance and longevity in automotive and mechanical applications.

Specifications

ASIN	B000NI93A2
Best Sellers Rank	#84,847 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #392 in Socket Wrenches
Bit Compatibilities	3/8 inch drive bits
Bit Set Composition	Bit Set
Brand	GEARWRENCH
Brand Name	GEARWRENCH
Customer Reviews	4.8 out of 5 stars 1,501 Reviews
Drive Bit Application	automotive
Drive Bit Shank Style	Tang
Drive System	External Hex
Drive system	External Hex
Finish Types	Polished
Finish type	Polished
Global Trade Identification Number	00099575812002
Included Components	1-1/2", 3", 6" & 12" Extensions
Item Length	12 Inches
Item Type Name	Gearwrench 81200D 4 Piece 3/8-Inch Drive Extension Set
Item Weight	590 g
Item length	12 Inches
Manufacturer	GearWrench
Manufacturer Part Number	81200D
Material	Alloy Steel
Material Type	Alloy Steel
Model Number	81200D
Number of Items	1
Number of Pieces	4
Number of pieces	4
Set Name	Gearwrench 81200D 4 Piece 3/8-Inch Drive Extension Set
UPC	787721773214 077349429113 971477621664 100069440028 785533915563 995758120028 021112613698 099575812002
Unit Count	1 Count

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