The Lee Factory Crimp Die crimps the bullet firmly in place. It features a collet that squeezes the case mouth onto the bullet for a firm hold, with or without a cannelure. It is nearly impossible to buckle the case as with regular roll crimp dies. Shell holder sold separately. The Lee Factory Crimp Die is made of steel and comes packaged in a plastic storage box.

Specifications and features:
Crimps bullet in place more firmly than any other tool
Impossible to buckle case
Trim length is not critical
Bullets without cannelure shoot more accurately with the factory crimp die