Specification Brand : HARFINGTON BulletPoint1 : Size - Total Length: 15mm/0.59"; Thread: M2.5*0.45; Needle Diameter: 4.5mm/0.18"; Measuring Length: 10mm/0.39" BulletPoint2 : Material - Made of HSS (High Speed Steel) with good corrosion resistance, high strength, hardness, and high mechanical properties. BulletPoint3 : Feature - Easy to install, with anti-slip treatment, screw in the thread to complete the assembly. BulletPoint4 : Application - Used to extend the dial gauge needle, applicable to all kinds of dial indicators, height gauges, depth gauges, thread M2.5 measuring tools, etc interchangeable tools. BulletPoint5 : Note - Do not use excessive force to avoid damaging the thread. Please confirm the size before purchase. Color : White ExternallyAssignedProductIdentifier : 9406092900319 ItemName : HARFINGTON 2pcs Dial Digital Indicator Extension Stem Rod 10mm Length 4.5mm Diameter M2.5 Thread High Speed Steel for Height Depth Gauge, Silver Tone ItemPackageDimensions_Height : 9 centimeters ItemPackageDimensions_Length : 1.4 centimeters ItemPackageDimensions_Width : 6.1 centimeters ItemPackageQuantity : 2 ItemTypeKeyword : dial-indicators Manufacturer : HARFINGTON Material : Plastic ModelNumber : hta221004hh0988 NumberOfItems : 1 PartNumber : hta221004hh0988 PowerSourceType : Corded Electric ProductDescription : Different lengths of indicator extension rods can meet the measurement requirements of the dial gauge. Made of HSS (High Speed Steel) with good corrosion resistance, high strength, hardness, and high mechanical properties. Used for dial gauge stylus extension, suitable for a variety of measuring meters. The M2.5 threaded dial extension is easy to install, just connect the dial indicator. Notice: Do not use excessive force to avoid damaging the thread. Please confirm the size before purchase.