Personalized Work With Nuts Beam Long Sleeve T-Shirt. Structural engineers work with nuts with and bolts on a steel beam is a funny design for engineers at birthdays, holidays and graduation. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL