The used Lee SW150 Filter Holder is a specialty filter adapter designed specifically for the Nikon 14-24mm f/2.8G ED AF-S. Key features include:

Enables Nikon 14-24mm Filter Use. The Nikon 14-24mm f/2.8G ED AF-S is a fantastic wide-angle zoom, but its built-in lens hood prevents the use of filters. The Lee SW150 filter holder enables shooters to use the filters they’ve long desired.

150 × 170mm Filter Compatibility. The SW150 is compatible with 150 × 170mm filters, giving you plenty of wiggle room for split NDs. This rental includes one Lee 150 × 170mm 0.6 hard-edge split neutral density filter.