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Complete Metal Blackening Solution Kit: Iron blackening solution restores iron and steel with a protective oxide finish. Kit includes 2x100g blackening solution, tweezers, and 2x 800-grit sandpaper sheets. Perfect for metalworkers, restorers, and DIYers Fast-Acting Water-Based Formula: Water-based black oxide formula works at room temperature — no heating needed. Mix 1 part solution with 2 parts water and apply. Delivers a rich black finish in just 3 minutes. Zero dimensional change to your parts Durable Anti-Corrosion Coating: Forms a tough black oxide layer that protects iron and steel from rust and wear. Achieve a dark gray to charcoal black finish. Apply protective oil or wax after treatment for enhanced durability and deeper color Simple 3-Minute Application: 1. Clean and sand metal with included 800-grit paper to remove rust and oxidation. 2. Mix 1 part solution to 2 parts water, apply by brush, sponge, or dip. 3. Wait 3 minutes, rinse, dry, and apply protective oil or wax (Always sand before use. Do not leave solution on too long. Rinse thoroughly after treatment.) Versatile Restoration & DIY Use: Ideal for blackening tools, auto parts, hardware, knives, bike parts, vintage restorations, steampunk, decor, and artwork. Trusted by blacksmiths, mechanics, restorers, and DIYers for a professional blackened finish