Specification Brand : OVAS HOO BulletPoint1 : Aluminum Thread Gauge: Bolt and nut identifier gauge is made of sturdy aluminum alloy and all thread checker are individually and properly placed in a good foam storage bracket BulletPoint2 : Quickly Identifier Thread Checker: Simply screw the nut or bolt onto the thread checker standard and metric. It only takes a few seconds to check the size and neatly place it in the compartment box BulletPoint3 : Double Sided Laser Etching Size: Each thread size gauge is etched on both sides (front and back), avoiding the hassle of having to rotate once to check the etched size on the thread gauge. Blue represents SAE, and red represents metric system BulletPoint4 : Three Reading Sizes: Size clearly engraved on the thread checker itself+size table on art paper sticker+size screen printed on foam; The perfect nut and bolt gauge for personal use or for family or friends who enjoy hands-on or DIY activities BulletPoint5 : 23PCS Imperial Bolt Measuring: 6-32, 6-40, 8-32, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20, 9/16-12, 9/16-18, 5/8-11, 5/8-18, 3/4-10, 3/4-16, 1-8, and 1-12(Blue) BulletPoint6 : 21PCS Metric Bolt Measuring: M3x0.5 M4x0.7、M5x0.8、M6x1.0、M7x1.0、M8x1.0、M8x1.25、M10x1.0、M10x1.25、M10x1.5、M12x1.25、M12x1.5、M12x1.75、M14x1.5、M14x2.0、M16x1.5、M16x2.0、M20x1.5、M20x2.5、M24x2.0 And M24x3.0(Red) BulletPoint7 : Color : Black CompatibleGrooveDiameter : 1E+1 millimeters ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier : 8903562972063 ExternallyAssignedProductIdentifier1 : 0614162631837 ExternallyAssignedProductIdentifier2 : 614162631837 FinishType : Plain IncludedComponents : 42 Nut and Bolt Thread Checker ItemName : 44pcs Nut and Bolt Thread Checker Inch & Metric Bolt and Nut Identifier Gauge Thread Checker Standard and Metric Suitable for Size Checker of Bolts or Nuts in Narrow Areas ItemPackageDimensions_Height : 32.5882 centimeters ItemPackageDimensions_Length : 6.7056 centimeters ItemPackageDimensions_Width : 29.3878 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : thread-gauges Manufacturer : OVAS HOO ManufacturerGrade : standard" or "suitable for general use Material : Aluminum MeasurementAccuracy : 0.01% MetalType : Alloy Steel MetalType1 : Stainless Steel MetalType2 : Aluminum ModelNumber : Thread Gauge - Inch & Metric Small Sizes NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : HME-Nut-006 ProductDescription : thread checker gauge bolt and nut identifier gauge thread pitch gauge metric and sae thread gauge thread gauge sae and metric