1. Tungsten steel material, high hardness, not easy to deform, to meet the needs of high-precision measuring instruments.2. High-precision devices are manufactured with a rigorous process and the edges are flat.3. Suitable for use in dial indicators.4. The thread is M2.5. (Note when buying)5. It is suitable as a replacement for old and damaged selector contacts.Specification:Special feature:Tungsten steel material, high hardness, not easy to deform, to meet the needs of high-precision measuring instruments.High-precision instruments are manufactured in a strict process and the edges are flat.Suitable for use in dial indicators. The thread is M2.5. (Note when buying)It is suitable as a replacement for old and damaged dial contacts.Specification:Material: Tungsten steelModel (Optional)Thread diameterOuter diameterHeight#1,WeierSteelM2.5D8L8#2,RubyM2.5D5L8#3,TungstenSteelM2.5D5L8#4.60°- TipsM2.5D5L10#5,BladeM2.5D5L14#6,ArcM2.5D5L10#7,Large ArcM2.5D10L5Package list:1 * ProbeNote:The actual product color may vary from the photo due to lighting. There may be slight differences in the measurement of the product.