Big Shot Penetrating Catalyst (18 oz)

This large-capacity rust releaser incorporates the same formula as the standard version but in a high-volume container. Designed for workshop or fleet use, it dissolves rust and corrosion and loosens fasteners at scale.

Its high output makes it useful in maintenance shops or farms with frequent rust-related issues. The longer application stream can assist with hard-to-reach components.

After penetration, it leaves a protective layer of lubrication to discourage future corrosion, keeping parts moving freely.

A practical economy option for frequent maintenance users needing reliable performance in rust-heavy conditions.