Cable managers are incredibly valuable for efficiently and effectively deploying long speaker cables, especially if you have band parent pit crew volunteers helping your group take the field. The CM-20 is built with a bottom mounting post to allow the unit to be securely attached to a speaker cart. A bottom access hole allows the end of cables to reach speaker input jacks without getting in the way of the coiled portion of the cable. The CM-20 has a total of 14.5” of cable storage space.