Personalized Mechanic Nuts and Bolts Women's T-Shirt. Mechanic Nuts and Bolts Women's T-Shirt - Storm Camo, underlined with a wrench and bedecked in nuts and bolts, are a unique gift design for professional and weekend mechanics! Classic ladies' styling with a feminine neckline, sleeves and fit. 5.0 oz., pre-shrunk 100% cotton. Double-needle stitching throughout