The Frankford Arsenal bench mounted Powder Measure features a static free aluminum body, a unique hopper shape to eliminate powder bridging and binding, micro-adjustable dispensing, and ultra smooth ball bearing operation which all combine to maximize powder dispensing accuracy. The powder measure comes ready to install with a bench mounting plate. FeaturesSTATIC FREE ALUMINUM BODYCOMPATIBLE WITH .22 - .50 CALNO BINDING OR BRIDGING OF POWDERMICRO ADJUSTABLE DISPENSINGHANDGUN POWDER DRUM AVAILABLEBENCH MOUNT PLATEPOWDER DRUM RIDES IN BALL BEARINGS FOR SMOOTH OPERATION