B4 safety ring for 4  mm squared and round rods Set of 10

With its fall arrest and anti-theft functions, this discreet and affordable system stops rod hooks from sliding. Anti-rotation square inner hole.  Works with all types of 4 mm square gallery rods, even if they are painted.
This original design in solid brass has a square hole and is more discreet than standard blocking collars. Also works with round rods up to ⌀ 4 mm.
Needs a specific screwdriver or key.

Screws with security drives upon request and by volume.

Made by Chassitech