12 screws is just enough to mount THREE (3) pieces of typical rack gear.
Works with all standard racks & rack-rails with 10-32 (10/32) threading.
In my personal experience, M.A.P. rack screws are stronger and higher quality than most other brands (such as Hosa and Raxxess). Sometimes other-brand rack screws I've used have had the screw head break off.
Another benefit of these M.A.P. rack screws is the washers are "captive," which means the plastic washer is difficult to remove from the screw. This is great because the washer always stays attached to the screw, and you never lose any washers.
