Two part - 10mm base plate and 20mm holder. The base plate has 6 holes that fit the 20x60 Z-axis profile. The holder mounts the 43mm Kress. Extra holes for mounting e.g. dust shoe. See more on build Stainless OX where you also can find the .dxf files for the dustshoe

43 mm Spindle Holder - Mount a Kress on your OX CNC 2016-12-07
Aluminum Spindle Holder for mounting Kress on the OX
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