Park Tool DAG-3 Derailleur Hanger Alignment Gauge MFPN=11654217 Lugs that have been worn

Lugs that have been worn inchround inch can have a straight edge again

Elastic jersey at back of knee provides great ventilation and freedom of movement

A clog-resistance function is achieved by 1) oversizing the valve bore near the internal rim rubber seal and 2) the machined extension of the valve past the seal

Tooth Count 42 Ring Position/Type Chain Retaining Single Ring Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Chainring BCD 110 Color Black Defined Color Black Material Aluminum

Park Tool DAG-3 Derailleur Hanger Alignment Gauge MFPN=11654217 Lugs that have been wornPark Tool Derailleur Alignment Gauge and straighenner for keeping drive train in correct alignment. Model Derailleur Hanger Alignment Gauge DAG 3 Description Derailleur Hanger Alignment Gauge Color Black