Amazingly the walker is four parts, three of which comprise the chain. The walker is hefty in your hand. The 4 piece part is actually printed in high detail plastic, and then using the lost wax method the mold is cast using silver. To be clear, and this is cool ... the chain has no breaks, or seams. The chains are poured in place. If you got this far, think about it. The chains were not made like we have been making chains for quite some time. The option to create interlocking pieces is revolutionary.