This set of sixteen elaborately Engraved Natural ABC Blocks with Maple Tray is indeed an heirloom set. Crafted from locally sourced, sustainably harvested maple hardwood, each block is a 1-3/4" cube with simple clean letter designs against densely detailed backgrounds. Blocks are completely natural with no finish. Wooden storage tray measures approximately 8-3/8" square by 1-3/4" deep.