BYUP delivers powerful rust removal with this 2-pack of 128 fl oz liquid solution, designed for tackling tough iron rust stains and restoring surfaces to their original shine. Ideal for automotive rust treatment, this rust cleaner is formulated to penetrate and dissolve stubborn rust on metal, sinks, tubs, and bathroom fixtures. Use as a rust remover spray or apply directly to affected areas for fast-acting results. Perfect for use as a shower rust stain remover, bathtub rust cleaner, or water rust stain remover, it effectively eliminates discoloration and buildup caused by hard water and oxidation. The convenient case packaging ensures you have enough product for multiple applications, making it suitable for both home and professional use. Safe for most surfaces when used as directed, this rust remover is a must-have for maintaining a clean, rust-free environment in bathrooms, kitchens, garages, and workshops. Each bottle contains 1 gal of liquid, providing long-lasting value and reliable performance for all your rust cleaning needs. No batteries required.