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Overview

How precise is the Park Tool ATD-1.2 Torque Driver?

The Park Tool ATD-1.2 Adjustable Torque Driver is a shop-quality torque driver that limits torque applied to bolts and fasteners. Park Tool notes that with carbon fiber components and low torque specifications becoming more common on bicycle components, a torque driver is an essential tool for bike maintenance, adjustment and assembly. The torque setting is adjustable by hand to 4, 4.5, 5, 5.5, or 6 Newton meters. Once the torque limit is reached, the tool gives a loud click and will not turn the fastener any further, preventing over-tightening and damage to lightweight components.

It includes 1/4-inch hex drive bits in the four most common sizes for small bicycle fasteners (3mm hex, 4mm hex, 5mm hex, and T25 Torx-compatible), stored in the handle when not in use. It sets torque clockwise only and is calibrated to be accurate to +/- 4%.

All the specs

MPN ATD-1.2

Included bits
1/4-inch hex drive, 3mm hex, 4mm hex, 5mm hex, T25 Torx-compatible
Torque settings
4, 4.5, 5, 5.5, or 6 Nm (clockwise only)
Action
Click-type torque limiting

FAQ

Good questions

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Can the ATD-1.2 be used on carbon fiber components?

Park Tool notes that with carbon fiber components and low torque specifications becoming more common on bicycle components, a torque driver is an essential tool for bike maintenance, adjustment and assembly. The ATD-1.2 can be set to 4, 4.5, 5, 5.5, or 6 Nm.

What bits are compatible with the ATD-1.2?

The ATD-1.2 includes 1/4-inch hex drive bits in 3mm hex, 4mm hex, 5mm hex, and T25 Torx-compatible sizes, stored in the handle when not in use.

How is the torque setting adjusted on the ATD-1.2?

The torque setting is adjustable by hand to 4, 4.5, 5, 5.5, or 6 Newton meters. Once the limit is reached, the tool gives a loud click and will not turn the fastener any further. It sets torque clockwise only.

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