Park Tool ATD-1.2 Adjustable Torque Driver — 4 to 6 Nm

The Park Tool ATD-1.2 Adjustable Torque Driver is an essential tool for precise tightening of bolts and fasteners on modern bicycles, especially those with carbon fiber or lightweight components. Designed for professional mechanics and home enthusiasts alike, it ensures proper torque application to prevent over-tightening and damage.

The torque setting can be quickly adjusted by hand to 4, 4.5, 5, 5.5, or 6 Nm, and the tool emits a distinct “click” once the preset torque is reached. Built with all-metal internal construction for long-term durability and consistent accuracy, the ATD-1.2 combines reliability with ergonomic comfort.

Each unit is individually assembled and calibrated at the Park Tool factory in St. Paul, Minnesota, USA.

Features

• Adjustable Torque Range: 4, 4.5, 5, 5.5, or 6 Nm.

• Accuracy & Protection: Prevents over-tightening of sensitive carbon and alloy components.

• Included Bits: 3mm, 4mm, 5mm hex, and T25 Torx®-compatible — all stored in the handle.

• Durable Construction: All-metal internal mechanism with a comfortable composite handle.

• Precision Calibrated: Factory-tested for accuracy and long-term performance.