Caring for your bike means respecting the specifications that manufacturers set for each component. The Park Tool ATD-1.2 makes it easy to get fastening right every time, especially with today's delicate carbon fiber and aluminum parts that can crack under excessive force. This shop-quality torque driver lets you choose from five precise settings—4, 4.5, 5, 5.5, or 6 Newton meters—and gives you clear feedback with an audible click when you've reached the correct tension. After that click, the tool simply won't turn any further, taking the guesswork out of assembly and adjustment. The sturdy all-metal mechanism is built to last, wrapped in a comfortable grip that feels good in your hand. Four essential hex bits come included and tuck neatly into the handle for convenient storage. Park Tool assembles and calibrates each tool at their Minnesota facility, so you can trust it to perform accurately for years of reliable maintenance.

• Torque range: 4, 4.5, 5, 5.5, or 6 Newton meters
• Included bits: 3mm hex, 4mm hex, 5mm hex, T25 Torx®-compatible
• Sets torque clockwise only
• Calibrated to be accurate to +/- 4%
• One-year warranty — see Park Tool Limited Warranty