Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: DAG-1 Derailleur Alignment Gauge - Clean Shifts
Review: Very happy with the Park Tool DAG-1 Derailleur Alignment Gauge. Simple tool that bolts onto your derailleur hanger. Easy to follow instructions show you how to align it. My bike hasn't shifted this smoothly since it was brand new.Highly recommended tool. I have always tried to manually straighten/align my hanger after falls and it wasn't until I got this tool I realised just how crooked it still was and how much better my bike could shift.
