Hornady's lock-n-load powder measure offers the most flexible operation and the widest range of any powder measure. It ranges from.5 - 265 grains of powder (special metering inserts and rotor required).Metering inserts can be changed with the push of a button, and this powder measure comes with standard rotor and metering insert. Two drop tubes are also provided standard for.204 to 45 caliber loads. With only.002" clearance between the drum and rotor, it's the tightest in the industry for a standard measure. This tight tolerance helps eliminate powder binding between the frame and drum, delivering smooth function with all types of propellant, extruded or ball. Specifications: Type: Powder Measure Caliber: All Size: Universal Quantity: 1 Weight: 3.55 lbs Grain: 0.5-265 Grain