Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge Tool,Blue

Great tool. Having borrowed one from a friend, I could see the benefits of having my own. Park Tool make some of the best bike tools, this is one, for its purpose this is perfect, it makes setting the derailleur hanger alignment so very easy and accurate.

One thing to notice is that when it came from Amazon, it was just packaged in a plastic bag and was a tiny bit rusty, but that wiped off with no issues. It works very well and if you're thinking about getting this or the DAG 3, then just get this one, it will do what you need it to do and save you a bunch of money.

Its a Park Tool so it does what intended. Well made and you know it'll work - but there's a price premium for that If I am honest this is a real luxury product for me given the number of times I expect to be using it (despite having more than one bike) but I bought it with some vouchers that were a present I have used it now and although only small adjustments were needed it did bring the shifting back to where I expected it to be So - does the job - but at a price

Checking you derailleur alignment is crucial to getting good consistent shifting. There are a lot of cheaper tools that will do the job a couple of times, but if you want something that will last and do the job consistently then you need a really sold tool and this Park Tool gauge is absolutely rock solid and easy to use.

Does the job nicely

Average quality, to heavy and not easy to use

I fitted brand new genuine Shimano Altus brake/shifters (brifters) and an Altus 8 speed derailleur to a second hand 2011 bike. No matter what I tried, the large ring on the front and the 2 largest cogs on the rear cassette caused the chain to come off the lower jockey wheel and jam next to the lower jockey wheel in the derailleur cage. Although there should be cross chaining noise, this jamming should not happen. The derailleur cage did not look anywhere close parallel with the chain line. The derailleur hanger looked straight until I put this tool on it. I found a huge 2.5+ inch difference on opposite horizontal sides of a 700c wheel rim. The vertical was not as bad, but still very unequal. This was very surprising as the hanger looked okay to the eye. I was able to use the Park Tools video on youtube to learn how to correct this. I used two colours of an ohp/cd marker (alcohol marker) for vertical / horizontal instead of the o-rings included. Don’t bend in large amounts, just go back and forth between opposite sides and bend small amounts. I used a strip of double sided velcro on the rear brake lever to hold the wheel still when needed. After a couple of test rides, the problem is now solved !

Excellent tool! Extremely satisfied with the product! Great value for money! High quality, durable product!

Sturdy tool, super handy to adjust derailleur hanger alignment. A must have to keep shifting perofrmances

Ottimo prodotto che te lo dico a fare

herramienta que no se usa mucho pero que es fundamental cuando el cambio lo tienes doblado o la patilla del cambio. Muchas veces te vuelves loco con el ajuste y no es mas que el cambio esta desalineado. La herramienta esta muy bien terminada y como repito...indispensable aunque sea un uso ocasional

Una herrería execelente,calidad parktool algo de rebabas en la sona de la soldadura pero buena calidad

Nachdem mein gravel Bike auf die Schaltung gefallen ist, waren die großen Ritzel auf der Kassette nicht mehr zu schalten. Da sich an der SRAM X01 Eagle axs eigentlich nix verziehen kann (Carbon) habe ich das Schaltauge getauscht. Die Schaltung ließ sich dennoch nicht mehr perfekt schalten. Jetzt habe ich das neue Schaltauge mit dem Park Tool DAG-2.2 geprüft. Heftig Fehlstellung, easy ausgerichtet. Danach schaltet wieder jeder Gang perfekt. Gerät ist sehr gut verarbeitet, kein Spiel, einfach zu bedienen. Klare Empfehlung