25mm 75mm S2 CRV Screw Bits Quick Release Bit Holder Tool Set

Our AdvantagesProduct Description Tool Set Content12 Pcs 25mm S2 Bits6 Pcs 75mm S2 Bits1 Pc 1/4 inch DR. Quick Change Bit HolderInnerPlastic and EVA LinerPackagingVisible Easy Open BoxesSurface TreatmentMirror/Blackening/Chrome/MattStandardDINPackagingPlastic Boxes with CartonsBrandUnionCertificationISO, BSCIOriginChinaPTA SetsPTA sets provide homeowners with a versatile collection of tools for basic home repair and improvement projects. These kits contain:Screwdriver bits (Phillips and flathead) in common sizes to handle different screw types.Drill bits in popular sizes to drill pilot holes or drive screws. The hex shanks fit any standard drill.Sockets (1/4" or 3/8" drive) to loosen and tighten bolts, nuts, and other hardware. Metric and standard sizes are included.Socket adapters to use 3/8" drive sockets on 1/4" drive tools.Nut driver sockets to drive hex nuts and bolts in wood, metal, and machinery.Bit holders to connect screwdriver bits to and use like manual screwdrivers.Affordable and compact, PTA sets have professional-grade bits and sockets to tackle minor repairs and projects around the house and garage. The variety covers the most common home improvement tasks.Main Fastener CoatingTypesApplicationSpray Test HoursCharacteristicsMirror Nickel-platingALL Metal72HoursStableExcellent polishing performanceImprove Wear resistanceWide range of applicationsMatt Nickel-platingALL Metal72HoursBlack Nickel-platingALL Metal48HoursHigh absorption rate of solar energyUsed in solar collector panels.Manganese PhosphateALL Metal72HoursEnhanced resistanceSand BlastALL Metal-Remove paint, rust, and residue scratches or casting marksElectrophoresisALL Metal1000HoursMaintain metallic lusterAnti-corrosion propertiesColor ElectroplatingALL Metal96HoursImprove mental strength Prevent metal oxidation  Steel Material  Chemical CompositionTypesCSiVCrMnNiMoCharacteristicCR-MO0.18-0.230.15-0.35-0.40-0.600.90-1.20-0.13-0.2041xx-series SAE steel gradesExcellent strength-to-weight ratioStronger and harderNot easily weldedCRV0.50.30.180.80-1.100.70-0.90--6000-series SAE steel gradesSuitable for hardeningResist abrasion, oxidation, and corrosionImprove material elasticityS20.40-0.550.90-1.20