Grimms Small Bobbins Threading Game includes 8 pieces (6 bobbins, tray and wooden needle) This is very versatile in its play options: First children can stack. Then they can practice threading. They can sort and stack based on colour and the bobbins can be used in building and sorting tasks. Materials: maple wood and limewood, non-toxic water based colour stain and non-toxic plant based oil finish. Size: H = 4,5cm, L = 22,5cm.