Personalized Mechanic Nuts and Bolts Men's V-Neck T-Shirt. Mechanic Nuts and Bolts Men's V-Neck T-Shirt - White, with "mechanic" underlined with a wrench and bedecked in nuts and bolts, are a unique gift design for professional and weekend mechanics! 4.7 oz., 100% pre-shrunk cotton Narrow, set-in 1x1 mitered V-neck collar Shoulder-to-shoulder taping Double-needle stitched sleeves and bottom hem