This magnetic bracket holds a notepad and pen to a steel surface like a file cabinet, fridge or side of desk. The build requires two 18 mm diameter neodymium magnets. It is designed around these magnets, Tops Docket Gold letter sized paper pads and the Uniball 207 Bold gel pen. The Fusion (f3d) file is completely parameterized. You can quickly modify it for another magnetic or pen combination by simply editing the corresponding parameter(s).