Cannon Downrigger Lock for Digi-Troll 10, Digi-Troll 5, Mag 5 ST and Mag 10 STX [1903020]Big Body Cannon Lock Locks large bodied downriggers securely to the boat with a pin tumbler lock. Fits Digi Troll 10, Digi Troll 5, Mag 5 ST and Mag 10 STX models. WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.