Cannon Downriggers S.S. Mounting Base - Magnum/Digitroll. Provides strong mount while also allowing easy removal of downrigger. Specifications for Cannon Stainless Steel Mounting Base: Manufacturer: Cannon Size: One Size Condition: New Color: Silver Quantity: 1 Features of Cannon Stainless Steel Mounting Base Corrosion and UV resistant. Material: 316-Grade stainless steel Compatible with all Optimum Magnum Uni-Troll and Easi-Troll models. Package Contents: Cannon Stainless Steel Mounting Base The Cannon Downriggers S.S. Mounting Base - Magnum/Digitroll 1904045 is a quality addition to the Cannon lineup. For more great deals on Fishing Gear by Cannon please browse our Cannon Fishing Gear page. Cannon Downriggers S.S. Mounting Base - Magnum/Digitroll 1904045