Lee's Pro Auto Disk Powder Measure has Elastomer wiper and teflon coated metal casting which makes this the smoothest operating measure. It will not cut powder and almost totally eliminates leakage. The large hopper with shut-off valve is attached with brass thumb nuts for the ultimate in disk changing convenience and holds 1/2 pound of powder. Included is a swivel adapter and spring return lever with spring and four disks and a positive pull-back lever. Size Measure Powder Type Pro Auto-Disk Powder Measure Color 1 Model Pro Auto Disk Finish Black/Red Series Powder Measure Caliber all Capacity .50 lbs Material Steel,Nylon,Plastic Quantity 1