These measure 0.322x0.142x~1.5in (8.15x3.6x~38mm) the length can vary a little.  They have a 0.169in (4.29mm) hole.

The picture is a random sample of what you get. They each have a unique serial number.  Most are sharp or resharpened or may have some use.  They may have some stains or small amount of residues or rust, might be slightly magnetic.  The hole may not be centered if one side or the other has been sharpened more.

Work well on aluminum, brass and plastics, have not tried anything else.

You get 8 of them.