Commercial reloaders or competitive shooters first choice! Elastomer wiper and teflon coated metal casting make this the smoothest operating measure. Will not cut powder and almost towally 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. Lee Pro Auto-Disk Powder Measure with all four disks.