Some torque drivers will be damaged if used for unfastening bolts. Is this tool ok for that??

You should never use a torque drive to unfasten, regardless of what is on the box. Torque drivers and wrenches have to be calibrated (and should be regularly recalibrated). Using them to unfasten causes them to become inaccurate faster, if not damaging the tool permanently.

Does anyone know the accuracy of this? It's odd that Park doesn't listed it on its website...makes me think it's up near +/- 6% or something.

I just (December 2019) purchased two of these, and tested both of them using a park tool tw-5.2 AND a Quinn digital torque adapter. Both Park ATD-1.2 torque drivers delivered higher torque than the indicated value. 4NM indicated on the ATD-1.2 was actually just over 4.6NM tested. The errors got smaller as the torque values went up...at 6NM indicated, the actual torque delivered was about 6.7 NM. In other words, at the low end the ATD-1.2 delivers about 15% more torque than indicated, and at the high end, it delivers about 12% more torque than indicated. This was consistent...both of my ATD-1.2 drivers gave me the same results, and the results were the same regardless of which device I used to measure them!

What is the difference between the atd 1 and the atd 1.2?

The ATD-1 is the old version the ATD-1.2 is the new version. The new one is a little easier to adjust the torque setting, but works basically the same.

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Park Tool ATD-1.2 - Adjustable Torque Driver Tool,Blue | bike-hand-tools

Park Tool ATD-1.2 - Adjustable Torque Driver Tool,Blue | bike-hand-tools

Product ID: 49414208

Details

Brand
Park Tool
Color
Blue
Item Length
7 Inches
Item Weight
0.3 Kilograms
Material
Aluminum

📏Compact 7-inch length

🔧Adjustable torque 4-6 Nm

⚙️All-metal internal build

£111.75

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Description

🔩 Tighten with confidence, ride with pride.

TRUSTED BY PROS - Park Tool’s #65 ranked torque wrench with 4.7-star rating from over 1,600 users—join the elite cyclists who rely on it.
PRECISION TORQUE CONTROL - Prevents overtightening with 5 exact torque settings (4-6 Nm) for delicate bike components.
ERGONOMIC T HANDLE DESIGN - 7-inch length and polished finish ensure comfortable grip and effortless control during use.
VERSATILE TORX COMPATIBILITY - Adjustable head fits multiple fasteners, making it the go-to tool for precision bike maintenance.
DURABLE ALL METAL CONSTRUCTION - Engineered with steelshop-quality internals for unmatched longevity and reliability.

The Park Tool ATD-1.2 is a precision adjustable torque driver designed to protect lightweight bike components from damage by limiting torque between 4 and 6 Nm. Built with durable all-metal internals and a comfortable T-handle, this 7-inch tool is a trusted choice among cycling professionals and enthusiasts alike.

Specifications

ASIN	B076CX3WDT
Best Sellers Rank	#33,470 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #65 in Torque Wrenches
Brand Name	Park Tool
Color	Blue
Customer Reviews	4.7 4.7 out of 5 stars (1,614)
End Style	Torx End
Finish Types	Polished
Global Trade Identification Number	00763477000057, 07634770000576
Head Style	Adjustable
Included Components	Power tools
Is Non Sparking	No
Item Length	7 Inches
Item Torque	6 Newton Meters
Item Type Name	Power, hand, tools
Item Weight	0.3 Kilograms
Manufacturer	PARK TOOL
Manufacturer Part Number	QKATD12
Material Type	Aluminum
Measurement Standard	Both (Dual)
Model Number	QKATD12
Operation Mode	Mechanical
Package Quantity	1
Set Name	Single Tool
UPC	763477000057
Wrench Length Style	T-Handle

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TrustScore 4.5 | 7,300+ reviews

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£111.75

Duties & taxes included

In stock

Sold byAmazon UKDelivered 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 UK.

Secure transaction

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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