Attaching twin cylinders to one of Zeagle's Heavy Duty BCs requires some basic hardware and
Zeagle offers everything you need. This simple bolt kit contains either 5.5" or 6.5" long bolts (quantity:
2) along with the washers (quantity: 4), split washers (quantity: 4), nuts (quantity: 6)
and wing nuts (quantity: 2). Choose the length of bolt you need for the diameter of the tanks
you are using.