The Birchwood Casey lineup of SYNVEX products will become your trusted source for cleaning, maintaining, and protecting your firearms. Designed to maintain your firearms without damaging them, these gun cleaning oils complement one another for a complete lineup of products to meet a variety of needs.Carbon Cutter: Dissolves heavy carbon and powder fouling. Safe on metal, polymer, and coated surfaces. Ideal for bores, bolts, breaks, and more. Clings to surfaces without rapid evaluation. Biodegradable and low-odor formula.