Suitable Places -- Fits perfectly to theme parks. Nanny and parents who need maximum flexibility. Stroller connector can connect two strollers at once. For Identical Strollers -- For two identical strollers with the same tube and geometric shape. And for or 98% of strollers. Stroller Connector -- It is designed to combine 2 strollers into 1 twin stroller. Assembly and disassembly -- It is easy to assemble and disassemble. This is not an original replacement product and the package does not include a stroller. Suitable Diameter -- Applicable to rack with a diameter of about 1-4cm. The connector is designed for 99% of the carts on the market. Material: aluminum tube + ABS, Specifications: a set of 3, each with 3 gears that can be adjusted: the length of the middle tube is adjustable 20cm/23cm/26cm, suitable for cart frame tubes with a diameter of 1-4cm