Specification Brand : Mxzzand BulletPoint1 : 32PCS: There are 32 pieces gauge blocks in the box and are well identified for convenient using and storing, choose and use at will! BulletPoint2 : HIGH ACCURACY: Gauge blocks have a high accuracy, low roughness, and good grinding force; Other accuracies used for calibrating instruments. BulletPoint3 : CALIBRATION MEASUREMENT: Thickness gauge block group is ground and polished to have a very low micro finish; They have an accuracy of ± 0.00005in. BulletPoint4 : MAIN FUNCTION: Gauge block is the highest accuracy benchmark for converting broadcast wavelengths into physical length sizes. And by comparing and measuring, transfer the dimensional annotation techniques to accuracy gauges, measuring tools, and workpieces. BulletPoint5 : STEEL MATERIAL: Made of premium steel after heat treatment, the gauge block has the characteristics of high accuracy, low roughness, good bonding force, and stable size. Color : Red ExternallyAssignedProductIdentifier : 7398581851658 IncludedComponents : inc ItemName : Gauge Block Set, Steel Gauge Block Set, 32 Pieces for Equipment ItemPackageDimensions_Height : 20.9 centimeters ItemPackageDimensions_Length : 5.1 centimeters ItemPackageDimensions_Width : 12.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : gage-blocks Manufacturer : Mxzzand Material : Material ModelName : Mxzzandgfgwxed0ho ModelNumber : Mxzzandgfgwxed0ho NumberOfItems : 1 PartNumber : Mxzzandgfgwxed0ho ProductDescription : 1. MAIN FUNCTION: Gauge block is the highest accuracy benchmark for converting broadcast wavelengths into physical length sizes. And by comparing and measuring, transfer the dimensional annotation techniques to accuracy gauges, measuring tools, and workpieces. 2. STEEL MATERIAL: Made of premium steel after heat treatment, the gauge block has the characteristics of high accuracy, low roughness, good bonding force, and stable size. 3. CALIBRATION MEASUREMENT: Thickness gauge block group is ground and polished to have a very low micro finish; They have an accuracy of ± 0.00005in. 4. HIGH ACCURACY: Gauge blocks have a high accuracy, low roughness, and good grinding force; Other accuracies used for calibrating instruments. 5. 32PCS: There are 32 pieces gauge blocks in the box and are well identified for convenient using and storing, choose and use at will!