Precision Brand Feeler Gauge include characteristics like: Material: High Carbon steel, Thickness In : .0015, .002, .003, .004, .005, .006, .007, .008, .009, .010, .011, .012, .013, .014, .015, .016, .018, .020, .022, .024, .025, .028, .030, .032, .035, Thickness Mm : .038, .051, .076, .102, .127, .152, .178, .203, .229, .254, .279, .305, .330, .356, .381, .406, .457, .508, .559, .610, .635, .711, .762, .508, .889.