3mm cross bow bolts

i made these to go with my double sized mini crossbow. i got the crossbow plans here
https://www.thingiverse.com/thing:2725597

Since i printed it larger i had to make my own bolts and these are what i made.
One is just a 3mm rod and there is a crudely made suction cup so i could print that in TPE and slide it on the blank rod.