Construction Built from marine grade aluminum and stainless steel for rust resistance and long life in harsh marine environments. HeavyDuty Stability Robust aluminum bracket design securely holds your fish finder, minimizing movement even in rough waters. Easy Height Adjustment Quick release system lets you set the pole length from 36 cm to 59 cm with ease, providing versatility for different fishing setups. Use scenarios Open water and chop: on a saltwater boat in rough seas, the bracket maintains stability so readings stay readable and the unit stays securely mounted. Kayak or small boat: adjustable height helps you position the display for comfortable viewing and reduces glare in varying angles and light conditions. Multiboat or variable layouts: the 36 cm to 59 cm height range allows quick adaptation to different cockpit configurations or seating positions.