Lee 8x57 Mauser Collet Die Set includes a Collet Die that uses a collet to squeeze a mandrel creating a precisely aligned case neck while reducing run out, Dead Length Bullet Seater Die, Shell Holder, Powder Dipper and Instructions/Load Data. Select this die set if you are reloading brass that has been fired through your gun only.
 
Note:  this die set is designed for the .323" bullet.