Because they offer maximum flexibility most reloaders start their collection of Forster Bench Rest dies with full length sizers. The die sizes the case neck and body sizes shoulder to set headspace (length) deprimes and expands the case neck. Machined by hand with one-piece reamers. The exclusive elevated ?E-Z? out expander ball system makes the difference in this sizing die. Full Length Dies are available in more than 70 calibers either individually or bundled with a seater die in the Bench Rest Die Set.