Grand Slam 170-2 Center Mount SHIPPING INCLUDED TO LOWER 48 STATE DESTINATIONS Uses TACO's spline lock technology for secure outrigger elevation Designed for use with standard 1-1/8" butt OD outriggers Locks every 18° Derlin bearings and stainless steel internal locking mechanism offer smooth adjustments, secure positioning and prevent movement Rugged, sure-grip knob adjusts and locks-in desired height & lay-down position for safe transporting and navigation under bridges Stainless steel arm with locking feature ensures TACO outriggers remain securely in place