RCBS Full Length Die Set .224 Valkyrie- TheRCBS Full Length Die Set .224 Valkyrie sizes the outside of the case, de-primes and expands the neck to accept the bullet. The die has vents to prevent case damage caused by trapped air and for excessive lubricant. Headspace is held to minimum tolerances to avoid changing the case body length during full length sizing. The included Seater Die has a built-in roll crimper to secure the bullet at the same time as it's seated. Sizes the outside of the caseDe-primes and expands the neck to accept the bulletDie has vents to prevent case damage caused by trapped air Has a built-in roll crimper to secure the bullet Expander-Decapping UnitSeater Die with Bullet Seater Plug