Stay4 is a Smaller Stay for Small Boxes, Brief Cases, Musical Instrument cases, and Humidors.  Your lunch box maybe.  Small boxes.  Overall length is 5-1/4 inches.  The shorter end is 2-7/8″ and the longer end is 3-5/8″.  Use one per box, OK?  Not two.  Just one.  $6 flat, ships free to USA addresses.  Expect some rust and dust as this is an old stock part that we recovered from an old factory building.