Whenever a degree of privacy or security is required, e.g. hostels, offices and student accommodation; you are not likely to find a more user-friendly lock to suit your purpose.

The How Sar Lock is made of two simple parts connected by a flexible tie – a slotted receiver and a curved wedge. The receiver fits into the recess in the door frame, where the latch fits. This locates between the door and frame when the door is closed. The curved wedge then slides into the slot in the receiver thus locking the receiver in position and preventing the door from opening.

To open the door simply slide the curved hook out of the hole in the plate and open the door.