An Erector Set is a construction toy that consists of metal beams, plates, and various connectors. It allows users to build models and structures by assembling these parts together using screws and nuts. The sets often include wheels, gears, and motors, enabling the creation of moving models. Originally introduced in the early 20th century, the Erector Set has inspired generations of builders and engineers. It promotes creativity, problem-solving, and fine motor skills, making it a popular educational tool. The versatility of the pieces encourages imaginative play and the exploration of basic engineering principles.