RCBS 20515 Carbide Die Set, 9MMLUGER/9x21/9x23 Made of the highest quality materials Hunting reloading dies Another quality Bushnell product Carbide Die Sets consist of a Carbide Sizer Die, Seater Die, and Bullet Seater Plug Made from case hardened steel Precision-drilled and reamed to the same exacting standards as the finest gun mechanisms Full-Length Sizer Dies for bottleneck cases have vents to prevent case damage Properly hardened and hand polished