Customized version of http://www.thingiverse.com/thing:158717

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=158717

Using the following options:

output_barb_count = 4
inputs = 1
strength = 1.0
connector_type = inline
vault_support = yes
outputs = 1
input_size = .5
vault_wall_thickness = 2.0
inline_junction_type = round
inline_junction_width = 0.8
input_units = US
input_barb_count = 4
output_size = .5
output_units = US
vault_connector_ratio = 1.8