Customized version of https://www.thingiverse.com/thing:1217308

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=1217308

Using the following options:

plug_length = 35
plug_detail = 102
thread_detail = 4
top_diameter = 32
top_style = bolt
top_base_bevel = yes
top_thread_length = 15
top_thread_diameter = 15
top_thread_pitch = 4
bottom_diameter = 45
bottom_style = slot
bottom_base_bevel = yes
slot_size = 2
bottom_thread_length = 47
bottom_thread_diameter = 18
bottom_thread_pitch = 4
pole_holder_length = 115
pole_holder_outer_diameter = 40
pole_holder_inner_diameter = 28
pole_holder_base_diameter = 80
gopro_style = triple_nut
gopro_base_height = 48