This mount was made for my pair of predator ear defenders, with the bridge being 80 mm wide. I have since printed another to store other items. I printed using an Ultimaker 2 at my school, using green PLA. The print worked just fine on fast print bring the time to around 40-60 mins. I was surprised how well the printer tackled the mounting portion. There is a small 4mm hole to allow a screw to be inserted, and then a 10mm wide countersink to not have a screw head protruding. I hope that you can find this just as helpful as I did.