The standard of designs, yet durable as ever, this Mounting Base brings security to your electric downrigger. Don&';t trust just anyone to lock down your valuable equipment. For large-body electric Cannon downriggers Such As: Magnum 5 ST Magnum 10 STX Magnum 10 STX-TS DT5 DT5 TS DT10 DT10 TS Heavy-duty Lexan construction Mounting base