This can hold an any 7 inch welding tank into a cart. In my case i used a 16 inch piece of angle iron that fit behind the legs of the cart (Note: The angle iron is not attached to the cart in any way so that it can be removed it needed). the part is designed to use 2 6mm bolts and washers to mount to the angle iron. Step and SolidWorks files have been added so feel free to modify the holder.
The author marked this model as their own original creation.