Lee Double Cavity Mold produces a 0.358 inches diameter 158 grain round nose bullet suitable for cartridges like 38 Special, 38 S&W, 38 Colt New Police, 357 Mag. Handles included. Features: Lee mold blocks are made from aluminum because of the exceptional molding qualities Mold cavities are CNC - machined for unmatched roundness and size control Most bullets from lee molds can be used as cast without sizing Trochoidal venting - unique venting on the mold face and sprue plate mating surface allows consistent and effortless fill out Round with flat shape