Wooden Scrabble Replacement Tiles & Letter Racks Set of Four(4) (Complete Set of 100 Letter Tiles) 100 Wooden Scrabble Tiles and Four Wooden Letter Racks Tiles size:approx. 18x20 mm/ thickness is 4 mm Great for replacement tiles, arts and crafts, jewelry making, gifts, spelling, scrapbooking etc Please keep out of reach of small children - can be a choking hazard