Clicker block with M3 Nut Trap

Another remix of https://www.thingiverse.com/thing:4921923, eliminate the need of the brass insert and used M3 Nut instead much reliable than the M3 insert due to the position of the insert in long run

1x 15mm M3 screw
1x M3 Nut (nylock is preferred)

all other part can be download from the original thing:4921923