Online at Widgetsuppy in Oregon, I got a gauge drill set and drill vise holder for $8 and a few dollars shipping, .13mm to 1mm, or .013" to .040", a Cag .64mm main jet is about .024", I also got the 2mm and 3mm drill sets that go to .120" almost 1/8" The metal case ones have gauge # by the drill and the decimal size.