You need a 608 bearing.
To Assemble you need the following parts:
one 608 bearing
At least you have to print the following parts:
1_pin_for_608_bearing_5_mm *1
2_Holder *1
3_bar_print_twice * 2
4_round_table_as_top *1
5b_round_base_round_pin_with_tube * 1 (or one of the other bases)
6_Pulley 608_thank you Karim *1
The author remixed this model.
I changed the number of positions of the bearing. I made it possible that the bearing can rotate or be in a fixed position. And the bearing can be put at the front as well.