Frankford Arsenal Drop Out Bullet Mold Release Agent and Lube is great for preparing your molds for casting the modern way. This spray works as both a release agent and a lube. The special formula contains graphite to help bullets drop easily from the mold and also works to prevent rust. For use with iron, aluminum or brass bullet molds. Features: Can also be used to protect bullet molds from rust when not in use Notes: Not a moly spray substitute. Mold release build up may cause molds to cast reduced diameter bullets. It is important to periodically remove excess agent build up with Acetone solvent and a stiff bristled brush.