These are Overweighed Club Plastic Pieces Weight 39 oz King stands for 3-3/4" These chess pieces are the recommended standard for official US chess federation tournaments All 34 Chess Pieces ( 32 standard and 2 extra queens) Heavy, Plastic Tournament Staunton and have Felted Bottoms A Staunton design full tournament-size, massively triple weighted and felt padded plastic chess set. Get the durability of impact resistant plastic along with the classic Staunton look. The Centurion chess set features a full 3.75" King with a stable base of 1.5" diameter.