The numerous holes fabricated into the adapter are designed for screws for secure attachment

you can get 2 and put one on each leaf of your double drive gate

This is a 1-1/4" female hinge

Fits 2-1/2” gate posts

which are used to bolt the steel plate—and the attached fence post—to the floor

Keystone® 2 Latch - Two-Sided (Nylon) for Vinyl, Ornamental or Wood Fence Gates Package Quantity::BUY PER BOX (20 PIECES) The numerous holes fabricated intoSecure your vinyl, ornamental or wood gate with the Keystone 2 Nylon Two Sided Gate Latch! Lockable from both sides, easy to install, and works with most fence and gate types! This latch requires 1 1 4" spacing between the post and gate frame to operate properly. Heavy duty design with weather resistant glass filled nylon construction Heavy duty striker design on every Keystone 2 Latch Reversible for right and left handed use Easily installation