The RCBS 90378 Primer Pocket Uniformers are expertly crafted with durable carbide cutters. These tools are ideal for truing the primer pocket wall and bottom, ensuring a well-kept and clean pocket. Specifically, the Trim Mate Large Primer Pocket Uniformer is perfect for large rifles. It works flawlessly with the Trim Pro Power Case Trimmer, accelerating the case preparation process while you trim. In addition, it comes with a robust high-torque motor. This kit also includes primer pocket brushes, chamfering and deburring tools, case neck brushes, and a packet of dry case neck lube for ultimate functionality and convenience.