Specification AgeRangeDescription : adult Brand : Bolisila BulletPoint1 : 3-Point Internal Micrometer BulletPoint2 : Three-point internal micrometers are suitable for measuring the internal diameter of hard materials, such as metal parts. BulletPoint3 : They can measure the internal diameter of deep holes because their design allows the measuring head to penetrate deep into the hole. BulletPoint4 : They are particularly suitable for measuring internal diameters with irregular shapes or difficult to access, such as deep holes or blind holes. Color : One Color ExternallyAssignedProductIdentifier : 7645600065320 ItemName : 20-25mm 25-30mm 30-40mm 40-50mm 0.001mm Three-point Internal Micrometers Three Point Inside Micrometer Measurement Tool Gauge(40-50mm) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : inside-micrometers Manufacturer : Bolisila ModelName : Bolisila ModelNumber : Bolisila NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : Bolisila ProductDescription : Three-point internal Micrometers for blind hole or through hole measuring. with set ring (under 100mm) contact points can be either carbide or hardened steel ProductSiteLaunchDate : 2024-07-10T07:46:27.987Z Size : 40-50mm UnitCount : 1