Mini Unit Beams: Bridge Builder Set Build Multiple Bridges with 1 kit! Unit Bricks has stepped beyond blocks to equip children with the tools they need to build the world they want. The latest in dynamic modelling systems, our NEW Mini Unit Beams Bridge Builder set provides a rich and rewarding STEM environment. With no additional tools required, budding engineers are ready and able to create, develop, re-work, and marvel at their creations. Each set includes: 620 precision molded Mini Unit Beams in 15 different shapes; 19 hard wood Mini Unit Bricks. For ages 6 and above Based on Pratt scale standard unit blocks Compatible with Mini Unit Bricks and Mini Unit Rocks Multi-sensory and tactile Encourages explorative and open-ended play Introduces mathematic foundations, logic and problem-solving Great for hand-eye co-ordination, fine motor skills and balance building More: All natural organic paints and dyes Unit Beams are made from BPA-free injection molded plastic Unit Blocks are made from solid hard wood; 100% earth-friendly Built in storage case made from eco-friendly cardboard with picture examples of buildable structures All Unit Bricks products conform to major international safety requirements for toys (ASTM, CPSIA, EN71) Designed in the USA and Hong Kong https://unitbricks.com/collections/all/products/mini-unit-beams-bridge-builder-set