Do you want creative and educational toy model for your kids? This piston, hydraulic well, pump experiment model will be your . This product is pump physics experiment model for children and students which can play by themselves. It is excellent to develop their practical ability and thinking ability. Features - Color: As shown. - Material: Plastic. - Size: 22.00X16.00X14.50 cm/8.65X6.29X5.70 inch. -Note: plate is color - Made of plastic processing material which is , no easy deformation, funny and wonderful. - Pump physics experiment model, greatly exercising kids' varieties of abilities, stimulate children's interest in learning and curiosity. - Also, funny and teaching DIY model, bringing you fantastic experience and fun. - It is easy to assemble, with disassembly and assembly, improve children's hands-on ability. - The good and creative kids and students, children will be happy for that and love it. Package list: 1 set x pump experiment model