5-in-1 Bike Bottom Bracket Tool for 12/16-Notch 39/41/44/46/49mm External Cups Lockring Install Removal - for Shimano, SRAM, FSA, Rotor, Chris King, Hawk Racing, Campagnolo, Truvativ GXP, etc

Just the tool we needed to change out our bottom bracket. Really well made and durable.

Very good tool for the price. much better than anticipated. Well built, however they can improve on design by making the outside textured or knurled for extra grip. Anything but pure smooth would help. Ensure you line everything up and push into the crank system firmly before attempting to remove bolt or else it will slip and strip out bolts. No need to buy super expensive name brand "blue" company parts when this is made just as well at a fraction of the cost.

ordered this because it claimed to fit the two size of BB that I have. It fit the SRAM DUB BB but did not fit my Chris King BB. The measurements for sram dub is 12Tooth 46MM external diameter and the Chris King was 16Tooth 44MM external diameter. Otherwise seems well machined and feels very heavy duty for the price, just sucks it doesnt accomplish the job it claims otherwise it would have been perfect for me

Was able to take off my dub BB, and install a shimano style BB with the same tool...nothing more I need out of this.Just have to make sure the tool is completely flush or it won't work very well.

I was hesitant to purchase this, so I took the chance. Impressive. I’m surprised the fancy tool companies are not producing something like this. It saves time digging around the BB tool drawer and when mobile it makes more room to carry other tools. It seems to be quality material, I haven’t had it very long but it gets used multiple times a day and is holding up great so far.

This is a handy tool that does what is says, but the one time I used it, it really marked up the anodized finish of the bottom bracket. That could be partially my fault, as the design requires you to make a conscious effort to hold it perfectly straight on the BB or it'll slip off, which I did once or twice. Maybe some grease would help? I didn't continue to use this and installed my next BB using Shimano plastic ring adapter that ensured it didn't get all marked up. That adapter didn't fit in this tool, even though it seems like it should be able to. If you're just throwing bikes together though and don't care about stuff like that, it's very handy.

This is a really clever way to maximize one tool

Bought this to install BB and it worked perfectly and very well made. Completely machined profiles.