The Dillon Carbide Pistol 3 Die Set Sizing/Depriming Die The Dillon sizing/depriming dies feature a unique “floating decap assembly” with a snap spring that throws the spent primer off the pin and eliminates the problem of primer “draw back” that often occurs when decapping military brass. The primary feature of Dillon’s size die design the long, tapered carbide ring with a radiused opening remains unchanged. Bullet Seating Die Dillons quick-disassembly seat die allows the user to disassemble and clean the seat die without losing adjustment. In this manner, bullet lube and shavings can be quickly removed from the die, thereby guaranteeing a constant seating depth. We’ve incorporated a “flip-flop” seating stem and a clip that enables you to remove the die insert and change the seating stem from round nose to semi-wadcutter without unscrewing a seating stem out of the die body Crimp Die Once your crimp die is set for the proper amount of crimp, you’ll never have to change it. This is especially good news for all of you who load lead bullets! Before, you had to unscrew the die from the tool head and disassemble the die in order to remove any bullet lube or lead residue. Then, you had to start from square one to re-adjust the crimp. Those days are over. All you have to do now is pop a clip and the die insert drops into your hand for cleaning. NOTE: All Dillon Pistol Die sets include our sizer/ decap die, seat die and a separate crimp die. (Taper crimp for autos; Accu (roll)-crimp for revolvers.) NOTE: These dies are NOT compatible with the Square Deal B reloader.