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
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