Tricopter Tailservo Support/Plate (15mm arms)

When I was building my tricopter I have used this http://www.thingiverse.com/thing:227642 as the yaw servo/motor mechanics. I didn't like cutting anything away from my servo, so I decided to lay the yaw servo flat... That's why I have desinged this tailservo support plate...

The arm width is 15mm - however I have also included the SCAD, so it can be changed very easily.