Drillpro 12pcs S2 Steel T6-T40 Magnetic Torx Screwdriver Bits Set 25mm Security Tamper Proof Screwdriver Bit

Specification MaterialS2 Alloy SteelTypeA HollowB SolidSurface TreatmentBrown OxideOverall Length25mmSizeT6 T7 T8 T9 T10 T15 T20 T25 T27 T30 T35 T40HardnessHRC 58 62Head TypeTorxShank Type1 4 Inch hexQuantity12pcsFeatures Strong Magnetic High precision High hardness and good workmanship Brown oxide surface treatment to enable the high hardness of surface and wear resistance to keep long tooling life Classification of the S grade to tool steel is shock resistant Uses for such tools are chisels and dies to punch and shear applications S2 has more vanadium that increases hardness and wear S2 has more manganese to reduce brittleness In the installation can easily suck screws electric screwdriver manual screwdriver electric drill Exquisite workmanship each edge can be accurately locked screws no damage to the screw and the screwdriver head Strong magnetic can suck the screws easily when used it Can be used for manual electric screwdriver screwdriver drill air and other tools Package Included 12 xscrewdriver bits