A beautiful set of wooden chop blocks and a precision seal-engraving knife. - Set includes: chop block, seal-engraving knife, seal material, seal box, ink pad, printing tools - Materials: wood (chop block), stone (seal material) - Features: Beautiful wood grain on the chop block, precision craftsmanship of the seal-engraving knife This item was stored at my parents' house. I am not familiar with how to use it, but I believe it is a clean item. I would appreciate it if you could understand this. Thank you for looking.