Park Tool Derailleur Alignment Gauge and straighenner for keeping drive train in correct alignment.
Gauge bar made of heavy gauge, chrome plated steel
Adjusts to fit 20" to 29"+ wheels
Replaceable threaded tip
Upgraded, large inner shaft for added strength*
Tighter tolerances for improved accuracy*
Improved clearance and reach to fit more frame/hanger combos including low clearance thru axle derailleur hangers*