Undersize Carbide Sizing DieFits all reloading presses that accept 7 8 x 14 dies. If the die is installed on a Dillon, you may want to put the lock ring underneath the tool head to secure the die. The dies are made out of carbide. No lubrication needed. Because the carbide is so hard, no lubrication is required on the case. You will find the die will actually burnish the case and improve its appearance. The die will last a lifetime! Screw the full length sizer in until it