Grimms Threading Game Small Bobbins This small threading game is very versatile in its play options: First, children can stack and then they can practice threading. If they know the colours, they can sort and stack the bobbins on the colored dowels. The bobbins are also ideal for sorting and building with the Wooden Balls (10239) and the Rainbows (10760/10700). Tip: also wonderful to roll up the rainbow cords and other ribbons on the bobbins. Ideal addition: wooden needle 10314 with cord length of 80cm. Materials: maple wood and limewood, non-toxic water based color stain or non-toxic plant based oil finish. H = 4,5cm, L = 22,5cm.