Guidecraft Peekaboo Lock Boxes with Storage Tray: Sorting & Stacking Toy for Children - Kids Early Learning and Development Toy Wooden lock boxes to reinforce fine motor skills for ages 2+ Set includes 12 pieces and a storage tray Six unique locks on color coordinated boxes, with matching sorting pieces Material: Plywood boxes, shape sorting pieces, brass and metal hardware and colored acrylic windows Educational Focus: Problem-solving and fine-motor skills