The X-10 Case Activated Powder Measure Assembly is compatible with the X-10 Progressive Press. Featuring a static-free aluminum body and a unique hopper shape to eliminate powder bridging and binding. The drum rides in ball bearings for ultrasmooth operation and the micro-adjustable dispense feature ensures maximum accuracy. The micrometer is capable of dispensing in increments of 2.5 - 50 grains. Assembly includes all of the required linkage and powder activators for easy plug and play operation on the X-10 Progressive Press. Features : Case Activated Design Only Activates When a Case is Present Includes Three Activators Precision Micrometer has Adjustable 2.5-50 Grain Charge Range Positive Reset Feature Eliminates Squib Loads Track Page Views With Auctiva's Counter