Lee's Slug Mold features the exclusive drive key which positively rotates the slug in rifled shotgun barrels. It doubles as a support rib allowing use of a standard trap wad with no need for a support wad or base filler. The sabot wad design outperforms rifled slugs in rifled slug barrels. Velocity and accuracy meet and exceed expensive factory loaded rifled slugs. The mold features self centering automatic core pins for maximum speed and convenience. It is complete with sprue plate, handles, and instructions with suggested loads.