HUB Safety Latches Inside Release Handles

This is a box of window safety latches / inside release handles.

From the packaging:
    •    Brand: HUB
    •    Product name: Safety Latches – Inside Release Handles
    •    Model numbers listed: 1178A + 1178B + 1178C

These are typically used on:
    •    Sliding windows
    •    Aluminium windows
    •    Glass panels
    •    Sometimes sliding doors

They allow you to lock the window securely from inside and release it when needed.