https://vizardsgunsandammo.com/rcbs-35001-full-length-die-set-7-62x39-russian/?ctk=9e066497-5521-46cc-8521-486c37181859&showHidden=true

This two-die set is intended for reloading bottleneck cases and consists of a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with Bullet Seater Plug. The Full-Length Sizer Die brings the case to SAAMI minimum cartridge dimensions. It 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.

RCBS 35001 F L DIE SET 7.62X39
Mfg Item Num: 35001
Model Number: Full Length Die Set
Purpose: Reloading
Series: Rifle
Unit of measure: EA
Type: Full Length Die Set
Caliber: 7.62x39 Russian
Die Type: Full Length
In Set: 2