MTX bike rack rail for making diy trunk bag/box

thingiverse

I'm using my bike rack to hold a mtx trunk bag in place. I built a speaker box for my rides and now I'm printing this rail that will attach to it, making it easy to quickly disconnect from the mtx rack. The rail with holes has been tested and proved effective, unlike the original version which was slightly too large, causing issues when trying to remove it mid-way through assembly. To save time, I've made some adjustments to its design.