RCBS .321 Diameter Neck Expander Die

RCBS Neck Expander Dies are specifically designed to flare the inside dimension of only the case neck to ensure perfect alignment of the bullet during seating.

• Expands the inside of the case neck of your brass casings
• Ensures perfect alignment of the bullet during seating
• Flares the inside dimension of the case neck while leaving the rest of the case body untouched
• Made with high-quality materials and precision manufacturing techniques
• Provides consistent results over time
• Neck Expander Plug Rod is designed to use with die