The MTx190 is only for OLD Davis Sewing Machines. Even Davis switched over to the 15x1 by 1910 or so. So if you have an old Low Arm, VF1, VF2, Minnesota or badged Davis before 1910 the MTx190 will replace the Boye 10 ($$$). Any other machine should not use this needle that I know of (maybe a White from the 1870's?) other than the industrial application the MTx190 was originally intended for.
Jon
Last edited by jlhmnj; 05-31-2012 at 08:54 AM.