Natural Bridge - Grimm'sThe stacking wooden bridge can be used as a stacking toy as well as for bridges for cars and trucks. A wonderful open ended toy carved from a single tree trunk! 6 pieces. Materials: made from alder, non toxic plant based oil finish. Size: length 41cm, 8cm thickness. Note about Grimm's Wooden Toys: Grimm's are made from natural materials and as such, will have variations in markings. The non toxic stains show the beautiful characteristics underneath.