High Precision ER Spanner

Basic InfoModel NO.:er 11 16 20 25 32 40 wrench spannerType:Hex WrenchMaterial:Alloy SteelStandard:American Type, Metric, British, German Type, European TypeSurface Treatment:Ash NickelFeature:Anti-Explosion, Ordinary, Anti-MagneticTrademark:TTSpecification:international standardOrigin:Qufu, ChinaProduct DescriptionMaterial: 42CrMoHardness: HRC40-451. Er spanner/wrench. 2. Suitable to er nut. 3. Made in hardness steel. 4. International quality standard. Feature1. Surface coating processing treatment, improve the surface hardness, wear resistance, improve the cleanliness, precision is more stab
High Precision ER Spanner