Standoff - 12mm x 3 mm

I kept hoping someone would make these, and ... well, no one ever did. I need them for building my RC stuff, and I'm out. So...here they are. 12mm long, with a 3mm opening that fits M3 sized screws. The screw end is a little long if you're going to end-to-end them...just clip them down with some cutters (I'll fix it later...pain in the backside to shorten a screw!). I print at 50% fill...that way when you snip the screw...you don't flatten it too much.