Stainless Steel Hex Nuts Product Promo

[Format] Professional e-commerce product main image, square 1:1, industrial precision promo for stainless hex nuts. [Colors] Light grey concrete-texture background, polished silver hex nuts, black and red headline text, dark red spec strip, red price block bottom left, black bottom banner, white logo chip. [Layout] Logo chip top center, huge headline across the top, thin spec subline beneath it, five hex nuts of different sizes arranged center, dark red spec bar lower right, price block and banner along the bottom. [Subject] Several shiny stainless-steel hexagonal nuts in descending sizes with stamped markings like "304" and "A2-70", crisp machined threads visible, standing and stacked on the grey surface. [Headline] Top: "Stainless Steel Hex Nuts" in heavy black with "Hex Nuts" in red. Subline: "Corrosion-Proof | Long-Lasting | Precise Threads". Red bar: "Effective Anti-Oxidation and Anti-Wear, Smooth Burr-Free Surface, Clean Deep Threads". Bottom left: "Final Price $15.9". Black banner: "Honest Business, Free Invoicing". [Badges] White logo chip top center; dark red spec bar and red-black bottom strip. [Mood] Rugged, exact and trustworthy, a no-nonsense hardware-counter pitch.