4-56 TPI/0.5-6mm, 60 Degrees, Screw Pitch Gage Set, 28 Leaves (4, 6, 8, 10, 11, 11.5 12, 13, 16, 20, 28, 32, 40, 56 TPI) ( 0.5, 0.75, 1, 1.23, 1.5, 1.75, 2-5 by 0.5, 6mm) Thread pitch size is stamped on each gage. Metric and unified screw pitch gages. Comes with a locking clamp. FULL SPECIFICATIONS CASE MATERIALVinyl Sleeve CATEGORY IDPrecision Measuring Tools MITUTOYO CATALOG PAGE NUMBERE-40 GROUP IDDial Indicators INDIVIDUAL OR SETSet LEAF COUNT28 MATERIALSteel MECHANICAL OR DIGITALMechanical PIECES PER SET28 leaves PRIMARY MEASURING RANGE LOWER INCH4 TPI PRIMARY MEASURING RANGE LOWER MM0.5mm PRIMARY MEASURING RANGE UPPER INCH56 TPI PRIMARY MEASURING RANGE UPPER MM6mm Product TypeDial Indicator RANGE0.5 - 6mm / 4 - 56 TPI RESOLUTION OR GRADUATION INCHVariable TPI RESOLUTION OR GRADUATION MMVariable mm SHIPPING HEIGHT INCH1 SHIPPING LENGTH INCH0.8 SHIPPING WEIGHT LBS0.2 SHIPPING WIDTH INCH3.8 THIRD DRILL DOWNMetric US Harmonized Tariff Schedule9017.30.8000