XD Bay Series Top MountFeatures:For use on sport fishing boats up to 40 feetAccepts all Tigress XD 1-1/8" butt diameter Outriggers19 upper-arm angle/locking (@10 deg.) using Tigress XD 316L Stainless Steel tooth locking design with horizontal stops for Trailering and bridgesLarge 3-lobe UV ergonomic knob for changing and locking the outriggers' elevation24 adjustable/locking system positions (15-degree increments) featuring Tigress XD 316L Stainless Steel locking design with HD Spring returnUser-friendly Side Operating LeverLarge 'XD' Aluminum 14.5mm thick baseplate with four corner mounting5/16" through x 3.000" x 5.000" 4-bolt patternFits Tigress and other industry-standard 4" x 6" mounting plates (four 5/16" diameter fasteners)Extreme-duty 316L Stainless Steel and anodized aluminum and fully sealed construction with UV protectionAmbidextrous mounting option to accommodate the side that the tri-lobe knob is positioned on3-Year Limited Warranty