586 - Sliding Gauge Holder - DAG-1, 2 and 2.2

The Park Tool 586 Sliding Gauge Holder is a replacement component designed for use with Park Tool’s DAG-1, DAG-2, and DAG-2.2 Derailleur Alignment Gauges. This sliding holder enables smooth, reliable movement of the main gauge arm along the tool’s body, maintaining accurate contact with the rim while you measure and correct derailleur hanger alignment.

Made to Park Tool’s standards, the 586 Sliding Gauge Holder ensures a secure, low-friction interface that helps you make repeatable, precise measurements, essential for dialling in perfect hanger alignment and achieving crisp, reliable shifting. Whether the original holder has worn from heavy use or you’re servicing your alignment tool as part of routine maintenance, this replacement part restores smooth tracking and professional performance.