The padlocks Fai by Viro guarantee a high resistance to cutting and corrosion: the arc is in fact steel hardened and tempered, coppered, nickel and chrome-plated.
The body is rectangular in solid brass, with bevelled edges.
The padlocks Fai by Viro have a snap mechanism, with pistons and contropistoncini brass and 2 latchbolts spring brass. The springs of the pins are phosphor bronze, while those of the latchbolts and the bow are spring steel class D.
Are available in various sizes, both arc and long arc-normal.