a 3d printed spring loaded latch. Uses 2x 10-32 bolts for mounting. make sure to print spring with pctg or petg or it will deform and not actually work as a spring. I ended up finding PCTG to work best though PETG worked comparably. Ill probably be making an immproved version soon! put the spring into the main body part , its just a press fit. After that, you need to bolt the cover on with the 10-32 bolts. this is also how you can mount the latch to surfacexs.