Lock Focus V2 Roller Shutter Lock
https://cdn.prod.website-files.com/69fd47b6fd25e9b4c1f02fce/6a7929810955b2e9f1b7efdd_LockFocusRollerlockV2.jpeg
Designed for use on roller shutters. Supplied with dome nuts to be fitted from the front of the panel to enable screws to secure lock from rear.