Description This RCBS Group A full-length die set is a two-die solution intended for reloading bottleneck rifle cases, specified for the .375 RUM cartridge. The set pairs a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with a bullet seater plug. The Full-Length Sizer is designed to bring cases to SAAMI minimum cartridge dimensions while controlling outside sizing, decapping, and neck expansion. Vents and tight headspace control reduce the risk of case damage and dimensional changes during full-length sizing. Specifications and Features: This product is a two-die set intended for reloading bottleneck cases. The set includes a Full-Length Sizer Die with an Expander-Decapping Unit. The kit also includes a Seater Die with Bullet Seater Plug. The Seater Die features a built-in roll crimper. The Full-Length Sizer Die brings the case to SAAMI minimum cartridge dimensions. The sizer sizes the outside of the case, de-primes, and expands the neck to accept the bullet. The die body includes vents to help prevent case damage from trapped air or excess lubricant. Headspace is held to minimum tolerances to avoid changing case body length during full-length sizing. The manufacturer is listed as RCBS. Shipping weight is listed as 1.3. WARNING This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov Shipping & Returns Reviews