The YakAttack SwitchBlade Transducer Deployment Arm is the best new mounting system for your fish finder's transducer. This transducer mount provides a clean and easy way to set up your fishfinder's transducer without drilling. This is the perfect setup for mounting on the YakAttack CellBlok and other track systems. YakAttack designed the blade to minimize gurgling and resistance, making the SwitchBlade the most efficient transducer arm on the market. The patented arm folds up compactly. No more cumbersome, rigid arms to deal with. And for the angler that really wants to dial it in to fit their boat perfectly, YakAttack made the length of the arms customizable!