Park Tool Tretlager BBT-29 16-Kerbbecher Werkzeug 39mm/48,5mm

I bought this to tighten the bottom bracket that came with my Shimano 105 R7000 setup. Although the dimensions seemed to be right, it didn't fit. It looks like a nice quality tool though. I don't fully understand the bottom bracket sizing and how to make them work.. Anyway I just ended up getting an ultegra BB from a friend, and borrowing the appropriate tool from him to tighten it. Note: this tool didn't fit the ultegra BB either. Maybe Park Tool can come up with a guide or chart on what tool to use with what BB? Maybe someone has already done that? I don't know....

One of many BB standards...so check your size. This one works great, serves its purpose, no complaints.

Gran calidad como lo de park tool

Very useful tool, it's sturdy and its build with good materials and good quality. I'm happy with this tool.

Park makes good stuff, and this is no exception. It’s the right tool for installing 30mm threaded bottom bracket cups. As another reviewer noted, it could be a bit thicker — if I were to design this tool, the big end would look a little more like a socket rather than a flat wrench. That said, it is well machined and won’t slip if you’re somewhat careful using it.

I already had the BBT-9, but needed a strong tool for the other size of HollowTech II bottom brackets. This is very strong and works great for those stuck on bottom brackets. Between this tool and the BBT-9 I can remove my Hollow Tech II Bottom Brackets. I am not clear why all HollowTech II BB are not the same size.... but this tool is great!!

It's park tool and it works plus it fits the old 24mm external shells along with the 30mm shells.

Good quality as usual from Park

Robusta y de buena calidad

Schwere und präzise Ausführung! Etwas scharfkantig - die Verarbeitung müsste für den Preis besser sein!

Nice quality of spanner. Found it cheapest and quickest delivery here on Amazon although I usually stick to bike shops for bike things. I was searching for an easy installation solution for the new style smaller bottom brackets from Shimano. The small side of this fits the new style (2018/19) Shimano groupset - R9100 - Bottom Bracket without having to use an adapter (FC24). The FC24 adapter does not all BB tools so watch out. Just for info - the large side is too big for the Ultegra 6800 and the 6800 BB adapter (FC25) is too big to press in to this spanner. I'm sure I might use the large end of the spanner one day with another brand of BB.

Lynskey GR270 bottom bracket tool

funziona e fa quello che deve.