Works best for reloading handgun cases but may also be used to charge rifle cases. Elastomer wiper and teflon coated metal casting. Will not cut powder and almost totally eliminates leakage. Large hopper with shut-off valve is attached with brass thumb nuts for the ultimate in disk changing convenience. Increased safety with positive pull-back lever. Includes swivel adapter and spring return lever with spring and all four disks. The hopper holds 1/2 pound of powder. Designed for use with Pro 1000 and Load-Master presses.