Get your speakers up where they belong so people can hear them! The speaker cabinet "top hat" mounts on the under side of your speaker cabinets and is used for setting the cabinet on stands.
These are for 1-1/2" diameter stands and require a 1-15/16" hole in the bottom of your cabinet to mount them. 4-5/8" diameter flange and 2-3/4" deep.
These are made of tuff ABS plastic and will work fine on lighter weight cabinets.