28CM single-arm section, the total length of 28 cm shelf, (recommended 10-27 inch 10KG within).
46CM arms section, the total length of 46 cm shelf, (recommended 10-27 inch 10KG within).
64CM invincible 3 arm long upgrade section (from 2 on the wall hole to upgrade to 4 on the wall hole) total length of 64 cm (recommended 10-27 inch 8KG inside)