This thing is a small device to massage your cat or a small dog.
For one Roller you need
1x RollHolderHead or 1x RollHolderBody
0.2 layer height, 5 top/bottom surfaces and 3 perimeters
The two rollholder can be printed with an infill of 20%, the pins should be printed with an infill of 60-80%.
First you have to print everything. Then put the rollholder into the stick and after that put the splint into stick to fix the rollholder in the stick.
Put the male and female through the rolls and put some glue onto the pin. Put the male pin through the hole in the rollholder and stick the female pin with the roll from above onto the mal pin. Wait until the glue is dry and your are done.