This Lowing Products 10 pound shot bag. Contains #304 (food grade) Stainless Steel shot. The shot in this bag is very highly resistant to corrosion. This shot bag is useful when projects involve a more chemically aggressive environment such as salt water. As with all our shot bags, these are built with real Cordura nylon fabric. Cordura has proven to be the most resistant to the everyday abrasion that our shot bags will endure. An occasional rinse with clear tap water is advised to remove dust and grime. If they have been immersed in a corrosive liquid, such as salt water. We advise a complete rinse with soapy water, as in a quarter car wash.