Personalized Nuts, Bolts, Angles and Gray Steel Beams Toddler Dress. A pattern of steel I-beams, channels, angles and nuts and bolts is a unique gift design for construction workers, structural and civil engineers and steel detailers and drafters at birthdays, holidays and graduation. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!