They are NOT marked in fractions of an inch as stated and illustrated. They are given in millimeters (see note 1). You are NOT straight. They wobble... some noticeably, some terribly. They do not fit in the holder marked with the size as shown in the picture. They are supplied assembled in a plastic case. Similar bits from Harbor Freight (#61621) have much less wobble and part sizes are printed on each bit.- - - Notes - - -Note 1: Drills are fractional inch diameters, but markings are metric. For example, a "6.5mm" bit is actually 6.36mm long, which is pretty much 1/4 inch. The "4.8mm" bit size is 4.73mm, which is very close to 3/16 inch (4.76mm). Comments and questions are welcome.