I used this for mounting lights to the Ninebot. It should work in PLA, but may snap off in an accident. I am using Ninjaflex which I find is a bit of a pain to print but is bendy. The shape itself is not the tidiest to print, but it needs to be printed on one side with raft and supports
Technical
m5 x 8mm or 10 mm allen head bolts x 2 for each bracket.