Customized version of http://www.thingiverse.com/thing:132311

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=132311

Instructions

Using the following options:

screw_diameter = 6

clamp_height = 12

screw_head_diameter = 6

pipe_diameter = 50.8

opening_angle = 100

clamp_thickness = 16