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 the Hummingbird Helix series; 5,7,9. 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