The Dillon SDB Bench Wrench is compact enough to allow operation within the very close confines of the Dillon Square Deal B progressive reloading machines' tool head. The spanner is sized to fit the proprietary dies supplied with the SDB machine.
The SDB wrench is included in Dillon's SDB Toolkit or is available separately should the complete toolkit not be selected.
This item is highly recommended to aid adjusting the die-settings on the Dillon SDB machine.