Extra Long Ideal Vacuum Cube barrel type coupling draw bolts are used to join the frames of two Cubes when there is a plate adapter between them. A quantity of at least four draw bolts are needed to join two 6 x 6 x 6 Cubes. Larger Cube sizes require more draw bolts.

This is a quantity of 1 extra long draw bolt with nut and made of 304L stainless steel.