Get perfect results when blocking your granny squares with this crochet granny square blocker. The wooden board includes 20 metal pieces, each measuring 10 cm, and a set of 5 sewing needles measuring 7 cm in length. This Katia board includes a small tray to place the metal pieces; in addition, one side has a ruler engraved with measurements in centimeters and inches. Make your granny squares the size you need for each of your upcoming projects! Measurements: 23.5 cm x 23.5 cm and 1.5 cm in height.