These pins are for the mentioned laundry dryers, 

one side is designed to be able to hold coat hanger, but You can use it replace the old ones as well.

V1 can be adjusted for any tube diameter

V2 is made for 20mm tubes

I recommend to print with PETg for both reasons; it is little bit flexible and able to withstand the UV radiation of the sun for years

also print with at least 3 or more perimeters on 0,4mm nozzle printer