Entry Level Fasteners offer protection from vandalism and opportunistic crime. Drivers can be purchased by the general public.
Enhanced Security Fasteners are less Common and less Recognizable. Driver Tooling is non-standard and Harder for the general public to buy.
Medium Security Rarer (less well-known) products. Supply of driver tooling is controlled, less readily available to buy, enhancing the security of the assembly.
High Security Either 1-way permanent fixing, or rare Hafren patented high security products requiring specialist tooling to remove (only available from Hafren approved distributors).
Maximum Security Highest security available. Products are either 1-way permanent fixings, or require bespoke exclusive, custom made driver tools to remove.