Sinclair International ( Brownells) Gen II Expander Die Body - Std (17-338)

The Sinclair Generation II Expander Die Body completely capture the mandrel within the die so the mandrel cannot pull out. An O-ring in the die cap allows the mandrel to float a bit and find its own center within the case neck. The Sinclair Generation II Expander Die Body Dies are precision machined from stainless steel (7/8”x14) with a Sinclair Stainless Steel Split Lock Ring included. Mandrels are sold separately. The standard Expander Die body handles 17-338 caliber mandrels and the large Expander Die boy handles 35 caliber and larger.