The ergonomic Lock-N-Load Quick Change Hand Tool features a dual sided chuck that allows for quick changeover of popular case preparation tools like chamfer, deburr, primer pocket reamers, cleaners, brushes, and other tools with 8-32 threads.Includes 3 dual sided chucks, chamfer/deburr tools, large/small primer pocket cleaners and neck brushes. The neck brushes are for the following calibers, 22 cal, 25 cal/6mm, 270 cal/7mm, 30 cal, 35 cal/9mm and 45 cal.