The Lee Auto-Disk Powder Measure automatically dispenses charges more uniformly than any other powder measure. The case itself actuates the measure as the neck is being flared. The measure is actuated during the presses maximum mechanical advantage. This assures the smooth, even action of the measure. Built-in baffle and precisely molded, glass reinforced charge disks contribute to the unmatched charge uniformity. Four powder disks included. The Auto-Disk powder measure must be used with the powder through expanding die supplied with all Lee pistol dies.