Be aware that the cheapest options here (Polished Nickle Steel, and Stainless Steel) will not show the best detail. For screen ready finish choose either Rhodium Plated or Sterling Silver.
This is an exact replica of the a cortical stack from Netflix's Altered Carbon series.
Makes a great memento or bottle opener for everyday carry.
Roll up a small note from a loved one and carry it in the stack so you can always have a piece of the person you love.