The RCBS Quick Change Case Holder has many advantages over the competition. Most other units use a tap wrench design to hold cartridge cases. Though this is great for threading holes with a self feeding tap, it does nothing to feed your case neck to the cutter. The RCBS Quick Change Case Holder features an ergonomic design that allows you to rotate the case and put forward pressure to feed the case neck to the cutter. The quick case change feature helps to speed up the process without having to use small obtrusive thrumbscrews.