The pieces can be easily assembled and reassembled to create any imaginable form, This set comes with a screw driver, Playtime Ideas:, Guidelines are provided in the set, Children will enjoy twisting and turning in order to assemble the parts together as per the guidelines helping to develop fine motor skill, concentration and eye-hand coordination, Parents can teach children to observe and estimate through trial and error and solve problems helping to develop their AQ, Parents can ask children to name their work/achievement, providing opportunity to interact helping to stimulate confidence and expressing themselves more freely and also developing language skill, To add more fun, children can play with 60 construction set, Build N Roll, 50Unit Block and Unit Building Blocks, Parents should praise children when they can do it and advice if they are not able to do so, Dimensions: 35 mm, SKU: PLNTY066