Review on 🚴 LEZYNE Professional Grade Bike Tool - 16 Notch 44mm External Bottom Bracket Socket, 3/8" Socket Drive, Compatible with Torque or Adjustable Wrench by Kyle Fachini

First of all - if you are tech savvy this tool is a 16 knurled tool with a diameter of 44mm. (Smaller diameter 44 mm, large diameter approx. 46 mm). It fits directly onto many Wheels Manufacturing threaded bottom brackets. More importantly for many of us, it will also fit a Shimano TL-FC25 polymer adapter, which in turn will then fit standard SMBBR-60 English threaded bottom bracket shells. It also fits directly to Shimano Centerlock disc brake disc retaining rings. The inside of this tool is actually semi-circular, this tool fits the TL-FC25, while the 46mm Park Tool 16-groove sockets, which have a "wavy" spline, just don't fit. BTW, and the tool is cast/forged steel with something like zinc plated or electroplated.