Cannon Standard Mounting Base withMagnum and Digi-Troll - The Cannon Standard Mounting Base withMagnum and Digi-Troll are for large body electric downriggers. This standard base features a strong, heavy duty construction and UV resistance. Fits Connon Mag 5 ST, Mag 10 STX, Mag 10 STX-TS, DT 5, DT 5 TS, DT 10, and DT 10 TS electric downriggers