There are two different styles of arms for Cantilever Rack, straight & inclined.

The straight arms are normally used for pallets or flat items.

The inclined arms are used for round items that could roll off of the arms.

You can mix these two different styles on the same upright. For example if you have pipes stored on one level and pallets on another.

You can also add lips to the arms for added piece of mind that the item will not fall of arms. Lips are not intended to take any of the load.

The arms come in many different capacities. The shorter arms have more capacity than the longer arms.