Star Wars: Legion Premium Large Bases - FFSWL29 : The Premium Large Bases pack contains eight premium notched bases covering all three sizes of notched base, providing four 50-mm bases to upgrade units such as the 74-Z Speeder Bikes, two 70-mm bases to upgrade units like the AT-RT, and two 100-mm bases to upgrade units such as the AT-ST or the T-47 Airspeeder.