The new BBT-19.2 is a heavy duty, shop quality tool for installing and removing 16-notch external bearing bottom bracket cups that have an approximate outer diameter of 44mm, which are commonly found on many road and mountain bikes. Made from investment cast steel, this updated version was manufactured to provide greater accuracy during use and to fit a wider variety of cups than previous models. It can be used with either a 3/8" drive torque wrench, 3/8" ratchet driver, FRW-1 Freewheel Remover Wrench, or 1" wrench.
The tool works exactly like it's supposed to. When you go into the bike shop and look at the tools they are using it's always Park Tool tools. That was good enough for me.