These blanks are made from food safe, hypoallergenic aluminum that will not change color or tarnish. They are .063" thick (industry labeled 14g.) They come shipped individually bagged to protect them from scratching during transit. They need minimal finishing for the burr on the back (light filing on the back edges or a quick run through a tumbler if you prefer). We can supply large quantities as well, please contact us, or visit our website ( for current bulk pricing on each item. (Found in the item's description.) Tag us on Instagram @handstamping or email your photos to kayce [!at] to have your work featured. We love our customer's creativity!