Park Tool Replacement O-Ring (Black) (Single) (For DAG-1/2/2.2) (#1626-2)

Replacement O-Ring for servicing the Park Tool Derailleur Alignment Gauge. Works to secure the sliding gauge bar when measuring the rim’s trueness. Sold individually.

Fits on the on the following tools:

• DAG-1
• DAG-2
• DAG-2.2