LEGO Marvel Super Heroes Iron Skull Sub Attack 76048 Dive to rescue Scuba Captain America from Iron Skull! Dive with Scuba Iron Man to free him from the Iron Skull Sub, which includes a chained cage and 4x stud shooters, plus Hydra diver's underwater jet. The Iron Skull Sub measures approximately 3-inches tall x 9-inches long x 4-inches wide. LEGO Marvel 76048 Iron Skull Sub Attack includes 335 pieces. Ages 7-14.