The Horizon Rack ‘Em 1” lockout hasp 5505 offers great protection against factory accidents and possible machinery mishaps. Each worker puts a lock on the hasp. This locks the machine on which they are working. The machine can only be unlocked when all padlocks have been removed from the hasp. A heavy duty steel construction resists tampering and the hasp is zinc plated to prevent rust. A red, rubberized coating means that the product is spark resistant. It is available in 2 styles (standard and interlocking) and can hold up to 6 padlocks.