Small Wire Coil Spool

This is a simple, small spool for coiling wire. Its total radius is 15mm but the radius of the inner part of the spool is 12.5mm. The inner part of the spool (in between the two sides) is 8mm wide and the two sides extend 2.5mm out and in from the inner part of the spool. It also has a small 2mm x 1mm rectangular hole in the spool for the wires going in and out.