Customized version of https://www.thingiverse.com/thing:5029940

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=5029940

Using the following options:

$fn = 40
$EC = 0.4
Thickness = 4
Radius = 7
RopeDiam = 1
HoleRad = 5
PullyCollarR = 5
PullyInset = 4
SupportHoleR = 3
BossRad = 7
BossCollarR = 5
BossInset = 2
SideThickness = 3