FR-5.2GT Lockring Tool w/ 12mm Guide Pin

Like most Park Tool products, this tool is exceptionally well made and performs exactly as intended. The machining is precise, the materials feel durable, and it fits securely without any unnecessary play. Using the correct tool makes bike maintenance much easier and helps prevent damage to expensive components. The compact design is easy to handle, and it feels comfortable and solid during use. It's clearly built for repeated use in both home workshops and professional bike shops. Even after multiple uses, it still looks and performs like new. Overall, this is another excellent specialty tool from Park Tool. If you're servicing compatible bicycle components and want a tool that offers a precise fit and dependable performance, this is a worthwhile addition to your bike repair toolkit.

Usual park tool quality and function. It does what it's supposed to and does it well.

Awesome centers itself and works great

Works fantastic. Alignment nub makes use substantially easier. Perfect for through axle wheels. Price is right (particularly for Park). Works great.

High quality lockring tool with 12 mm guide pin for proper fit on thru axle hubs. Worked great for removal and installation of my Shimano cassette and will surly work with other brands as well. Pair it up with a 1” socket or wrench for great stability and ease of use. From my experience, ParkTool always provides exceptional value for the money!

The centering pin is extremely helpful

does what it is supposed to and is well made.

Park tool, nothing to complain about. Not cheap, worth the cost.

Perfecta para cassettes Shimano-Sram así como discos de freno con sistema Centerlock interno. El vástago interno fija estupendamente la herramienta en su sitio impidiendo que se mueva y provoque daños a las tuercas de cierre del piñón o el disco, sobre todo en los de aluminio que son más débiles. Se vuelve totalmente imprescindible en ejes pasantes de 12mm.

I hadn’t used the tool at the time of writing this review, however, as is typical of Park Tool, it is of high quality and will no doubt work well for a long time.

J'avais des difficultés à retirer la cassette d'un vieux vélo et ce petit outil m'a grandement facilité la tâche. C'est un outil coûteux, mais il en vaut la peine. Ma cassette était très coincée en place, je suis donc reconnaissant de la facilité avec laquelle elle a été retirée après l'achat de cet outil.

Perfect works for my bikes with Sram and Shimano cassettes

Top notch tool as usual from Park tools.