Use with your rear quick release skewer Practical thing for bike maintenance or transport Updated : v1 can move when the quick release skewer is in place, length 80mm (on picture 1 and 2) v2 is static when the quick release skewer is in place, easier to print and allow to keep the spacing preventing the crushing of the frame, no need support, length 130mm v3 = v2 with less material (on picture 3 and 4) Comment if one size does not fit with your bike or quick release A kinematic model could emerge Printed on Zortrax with ABS but should be ok with PLA infil 50%