Personalized Nuts, Bolts, Angles and Gray Steel Beams Women's T-Shirt. 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. Classic ladies' styling with a feminine neckline, sleeves and fit. 5.0 oz., pre-shrunk 100% cotton. Double-needle stitching throughout