Tail skid for RC airplane

I designed this tail ski (or skid) for our 35% scale Aeroworks Extra 260 RC airplane. It is made for flying on snow or ice although tail skids work on grass too (but affect the turning radius). At 100% infill, it's pretty robust, having survived some harrier landings.

The "July edition" file is more heavy duty, but heavier. It also has a little half sphere at the bottom to help with smooth turning while taxiing.