This 45 piece set includes 2 spinning wheels and starting gates for rapid marble release. It lacks advanced pieces of the larger sets allowing kids to focus on the basics without frustration. Fully compatible with other Quercetti Marble run play sets (sold separately). The possibilites for future expansion are endless! Manufacturered by Quercetti. Kids will enjoy building without realizing they're learning scientific principles like gravity momentum and torque. Quercetti has been proudly manufacturing educational toys in Italy for 65 years. Contents include: 14 pillars/tubes/uprights 4 base elements 2 swirls2 starting gates 1 starting gate container 10 marbles and 10 straight tracks. A great starter set for children aged 4 to 8 years. The simplistic design allows for open ended building in unique kid-powered configurations.