Area 419 Zero Modular Traditional Shellholder System Grey. This removes your ability however to dial in your shoulder bump until now. With the new ZERO Modular Shellholder System you can set up your shellholder to your die and have more consistency more repeatability and less hassle. Its a win-win-win. Specifications for Area 419 Zero Modular Traditional Shellholder System: Manufacturer: Area 419 Caliber: .308 Winchester .223 Remington Fabric/Material: Aluminum Weight: 2 lb Condition: New Color: Grey Projectile Caliber: .308 Caliber .223 Caliber Country of Origin: USA Features of Area 419 Zero Modular Traditional Shellholder System A Base (meant for ZERO or Traditional presses your choice) THREE Shellholder/Extractor tops sized for 223 308 Standard Magnum (or similar) SIX Precision Ground headspace inserts ranging from +.002? to -.008? Package Contents: Area 419 Zero Modular Traditional Shellholder System Area 419 419-ZMSS-nonzero: Zero Modular Traditional Shellholder System Grey