This product is a rust removal conversion agent. It is made of phosphates, chromates, vanadate salts, nitrides, etc. The size is 12cm*4cm/100ML. It features a high-tech epoxy reinforced finish for excellent adhesion and durability. It converts and replaces existing rust with a black protective polymer barrier and can restore and protect iron and metal surfaces of cars, trash cans, equipment, railings, etc. The net content is 100ml, shelf life is 3 years, and it should be stored in a cool dry place. It is used for rust removal and renovation and has a gross weight of about 135g. It creates a weatherproof and ready for a fresh coat of paint on your car's chassis. The package includes 1pc/3pcs/5pcs* 1*Brush.