Lee Gunsmith And Reloading Equipment. Three die handgun steel die sets consist of a steel sizing die (requires case lubrication) a powder through expander die and a seater crimper die. Generally this option is chosen for calibers that have a design other than straight walled because carbide is not practical for such designs. Specifications for Lee Gunsmith And Reloading Equipment 90270: Manufacturer: Lee Caliber: .357 SIG Additional Features: Steel 3-Die Set Pistol Fabric/Material: Steel Gun Type: Pistol Package Contents: Lee Gunsmith And Reloading Equipment 90270 The Lee Steel 3 Die Set W/Shellholder For 357 Sig 90270 is a quality addition to the Lee Precision lineup. For more great deals on Pistol Reloading Dies by Lee Precision please browse our Lee Reloading Equipment page. Lee Gunsmith And Reloading Equipment 90270