The Lee Precision Carbide Sizing Die uses a solid carbide sizer ring that has been specially ground and polished with diamond wheels. This hard, diamond polished surface eliminates the need for case lubrication, which saves you time and money, and it will never wear out. Lee's exclusive contour grind sizes closer to the rim than any other brand of sizing die.
The collet held decapper is nearly unbreakable even if you miss-adjust it. It is strong enough to decap military cases with crimped primers. The collet clamp accurately centers the decapper in the die. Should you over stress the decapper for any reason, it harmlessly slides up without breaking and is easily reset.