Item Thread Measuring Wire Set Included Thread Pitch - mm 0.05 mm to 6.00 mm Included Threads per Inch 3 TPI to 48 TPI Length 3.875 in Maximum Thread Pitch - mm 6 mm Maximum TPI 48 Minimum Thread Pitch - mm 0.5 mm Minimum TPI 3 Thread Pitch Range 0.5 mm to 6.00 mm TPI Range 3 to 48 ACME TPI Range 3 to 16 Yes Case Type Protective Plastic Sleeve Material Steel Number of Pieces 48 For Thread Type Metric ACME