TimberLine Towers (4 Pack) Color:One Color Whether the SwitchBlade Transducer Arm P ST OUTFITTER 58 Whether the SwitchBlade Transducer Arm is mounted on top of a YakAttack CellBlok or on the gunwale of your kayak the depth of the transducer is easily adjustable and gives you the ability to get the transducer deep enough for your side scan fish finder By replacing the included knob used to attach the SwitchBlade base to the track with the the LockNLoad Mounting base it gives you the ability to mount your fish finder and transducer arm in one compact system Product Features RoundBar SL Adapter required to use Yakima’s classic RoundBar with StreamLine System Towers (sold separately)