No more ball mounts, no more slipping or rotating in the track. With the LockNLoad™ mounting system this is the cleanest and most secure mounting solution for Garmin and Raymarine units featuring a 3 hole pattern round base such as the Garmin Striker 4 and the Raymarine Dragonfly 7 Pro. Features the LockNLoad mounting system offering ultra secure attachment to YakAttack GearTrac, Mighty Mount II, MightyMount XL, and most other factory-installed kayak track systems. Hardware included.