Clock holder/adapter for Honda Shadow VT600

I created this adapter to use a clock I bought (http://aliexpress.com/store/product/Freeshipping-Universal-Motorcycle-Handlebar-Bar-Mount-Clock-for-ATV-Motor-Honda-Suzuki-Yamaha-Kawasaki-Harley-Cruiser/507996_1223653370.html) that didn't fit my handlebar so I tried to use it within the instrument panel.

The clock housing has a 4cm diameter and the hex head width is 3cm long. I printed with a Prusa i3 using standard configuration and supports.