Customized version of https://www.thingiverse.com/thing:45950

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=45950

Using the following options:

whole_periods = 2
turns = 4
height = 50
width = 5
inner_diameter = 190
rail_diameter = 2
mirror_reinforced = yes
top_and_bottom_reinforced = no
solid_ring = no
segments_per_turn = 50
fragments_per_segment = 8