The file 'Shimano BB-MT800/SM-BBR60 Adaptor 3D Printer Model' is (stl) file type, size is 48.5KB.
This is an adaptor to allow you to use a standard Hollowtech II bottom bracket tool with some of Shimano's newer bb's that have a smaller diameter than traditional external bb cups. Specifically this is designed to work with the BB-MT800 (tested) and SM-BBR60 bb's from Shimano.
The adaptor is equivalent to Shimano's own TL-FC25 tool. It's design to be a tight fit on the bb.
I recommend you use a fully encircled tool (such as the Park Tool BBT-9) when using this adaptor, instead of one of the half moon style ones, to prevent the adaptor deforming/stripping.
I've tested this with a Lezyne EXBBT-CLT tool (pictured) on a BB-MT800 bottom bracket and it works perfectly.
Shimano_M800_BB_Converter.stl | 727.7KB |