GA12-N20 micro metal gear motor to Lego axle (shaft) adapter

This piece is designed to connect GA12-N20 micro metal gear motor to Lego pieces. I used this connector for my Lego electrification project. See more details below about electronic and mechanic setup: https://github.com/omuryildirim/lego-42212-autonomy One side of connector is designed for GA12-N20 with 3mm nominal diameter shaft. Typically GA12-N20 shaft has a D shape, where the diameter becomes 2.5mm at narrow part. The other side of connector is designed for axles pieces like Lego Technic, Axle 6L (#3706) . These pieces have 4.4mmx4.4mm dimensions. The piece is 16mm long, and has 8mm connection points in each side.