Personalized Nuts and Bolts Pumpkin Long Sleeve T-Shirt. A pumpkin face made up of nuts and bolts is a humorous gift design for mechanics and structural engineers at Halloween and birthdays. 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