The Lee deluxe handgun 4-die set is a great set of reloading dies for anyone looking for a set of dies that will Reload accurate ammunition every time the dies used. Each deluxe 4-die set comes packaged with a carbide full length sizing die with decapping unit, powder through expanding die (used for expanding and Belling the case mouth while charging the case with powder), a bullet seating die, and Lee exclusive carbide factory crimp die. The carbide factory crimp die is that final step to make sure each round with positively chamber freely with factory-like dependability. The deluxe 4-die set also comes packaged with the appropriate shellholder, powder Dipper, load data sheet and flat 4-die plastic container. Carbide dies do not require the cases to be lubricated prior to use like non-carbide dies. Notes: carbide dies do not require the cases to be lubricated prior to use like non-carbide dies. Specifications: - cartridge: .40 S&W - number of dies: 4 - die type: sizer, mouth expander, seater, crimp - threads: 7/8 inch -14 - shellholder included: yes - storage box included: yes