Goobi 37 (37 pieces) Magnetic Construction Set Goobi 37 contains 21 magnetic bars, 12 iron balls (non-magnetic) and 4 tripods. Vibrant rainbow assorted colors - bars and tripods. Innovative, patented Goobi tripods are used to make rigid 90 degree connections. Strong neodymium magnets are securely embedded inside the plastic body. Meets ASTM (USA) and EN71 (EU) toy safety standards. An ideal and amusing activity which induces creativity and helps to develop a sense of proportion. Creates simple and spontaneous ways to learn basics of geometry, physics, architecture and engineering. Can enhance eye-hand coordination and improve problem solving skills. An entertaining activity that brings families together, revealing their undiscovered creativity. Can even appeal to many professionals as a stress reducer and helpful to occupational therapists in the rehabilitation of people with motor skill challenges.