Cannon Dual Axis 360 Swivel Adjustable Downrigger Mount Rod Holder (Silver). Img{max-width:100%; height:auto;} Cannon Dual Axis Adjustable Downrigger Mount Rod Holder 360 Swivel (Silver). Cannon Dual Axis Adjustable Downrigger Mount Rod Holder 360 Swivel (Silver). DUAL AXIS ADJUSTABLE ROD HOLDERS DOWNRIGGER MOUNT. Mount our dual axis rod holders between the mounting base and swivel base of your Cannon downrigger for unparalleled rod positioning. A pistol grip release allows for quick, one-handed angle changes, and the innovative ratcheting adjustment system allows you to easily pull the holder to a vertical position. Full 360 degree rotation makes it the ultimate fishing accessory.