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. Material: Aluminum/Composite, Made in: USA