Wishbone Mini-Flip Wheels assemble with a Top and Base to create Wishbone Mini-Flip, a 3in1 walker, rocker and ride-on for ages 9 months to 3 years Contains four x 71.5mm inline skate wheels with 608 steel bearings. These inline wheels offer a stable walker for little ones eager to learn to walk. Mini-Flip is a beautiful heirloom toy and a great gift for baby.