Adjust your trolling or auxiliary motor to 5 vertical running positions on 55-0410, and 4 positions on 55-0416 for changing water or load conditions. The anodized aluminum bracket is built to handle the increased weight and torque output of today's four strokes with long or short shafts. Hand-adjustable with just the turn of a knob, stainless steel torsion springs counterbalance motor weight making adjustments a breeze -- while the 2"-thick, extra-wide mounting board, along with aircraft-type stainless steel hardware deliver heavy-duty performance. Handles up to 35hp, 263# motor, with 16" of travel. Meets ABYC Standards.