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Hand Tools

Hand tools are where quality shows most plainly, because the work passes straight through them: the difference between two pliers that do the same job is in the steel, the heat treatment and the geometry of the jaws. This page explains the tool groups, what each steel grade and standard mark actually means, and what to look for when choosing. The catalogue holds over 1,800 hand tools across 17 groups.

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The groups and what they do

Hand tools divide by the job: gripping and cutting, tightening and loosening, striking, and fastening. Tools within a group look alike on a listing, but jaw geometry and steel grade decide where each belongs.

GroupJobFigure to checkTypical use
Pliers & pincersGripping, bending, cuttingJaw hardness (HRC), insulationElectrical, assembly, maintenance
Side cuttersCutting wire and cableCutting capacity, jaw angleElectrical installation, electronics
Wrench setsTightening boltsJaw size (mm), DIN classMachine maintenance, assembly
Sockets & ratchetsFast tighteningSquare drive (1/4", 3/8", 1/2")Automotive, assembly lines
ScrewdriversDriving screwsTip type (PH/PZ/TX), VDEElectrical panels, assembly
Hammers & sledgesStrikingHead weight, handle materialConstruction, steelwork
Cable & bolt cuttersCutting heavy sectionsCutting capacity (mm²/mm)Electrical, rebar

Steel grades: what CrV, CrMo and S2 mean

The steel code stamped on a tool tells you what it will take. Chrome-vanadium (CrV) is the standard for hand tools: hard, springy and reasonably corrosion resistant. Chrome-molybdenum (CrMo) is tougher and takes impact, which is why impact sockets are made of it — a CrV socket will shatter on an impact wrench.

S2 steel appears in bits and screwdriver tips: high hardness with a tip geometry that does not cam out of the screw. The rule is short — hand tightening CrV, impact CrMo, bits S2.

  • CrV: pliers, wrenches, hand sockets — the general-purpose standard.
  • CrMo: impact sockets and accessories — takes shock (usually a black or matt finish).
  • S2: bits and screwdriver tips — hardness and tip geometry.
  • Chrome plating is corrosion protection, not a hardness rating.

VDE and electrician's tools

Tools marked VDE are individually tested for work on live parts up to 1,000 V, at a test voltage above the working voltage. The mark means a documented insulation test, not simply that the handle is plastic.

Using an uninsulated tool on electrical work is not safe even where the handle looks like plastic. On VDE tools the insulation is checked by eye before every use for cracks, crushing or heat damage, and any tool with damaged insulation is taken out of service.

Wrench and socket sizing

Wrenches are numbered by jaw opening in millimetres — 10, 13, 17, 19 — and DIN 3113 defines open-end wrench geometry. Sockets are classified by square drive: 1/4" for fine work, 3/8" for general use, 1/2" where high torque is needed.

The square drive sets the maximum torque available; running a 1/4" socket off a 1/2" ratchet breaks the socket. When buying a set, check the drive matches the ratchets and torque wrenches you already have.

Square driveTypical torque rangeUse
1/4"2-25 NmElectronics, interior trim, fine assembly
3/8"10-70 NmGeneral maintenance, work on top of the engine
1/2"40-250 NmWheels, chassis, heavy assembly

What to look for

Three marks explain most of the price difference in a listing: the steel code, the standard mark (DIN/ISO/VDE) and the finish of the working faces. The fourth is frequency of use — a higher grade pays for itself on a tool picked up dozens of times a day and is wasted on one used twice a year.

  • For tools in constant use, look for CrV/CrMo and a standard mark.
  • For electrical work, use VDE-marked tools only.
  • Judge a set by which sizes it contains, not by the piece count.
  • Working faces should be flat and parallel; a sloppy jaw rounds off bolt heads.

Supply from Seza Global

We supply Knipex, Makita, Bosch, Tomax, MTE and Best in this group, wholesale. The range runs from pliers and pincers to wrench sets, screwdrivers and socket sets — over 1,800 products across 17 groups.

For trade and bulk orders, send the model list and quantities; we come back with stock, pricing and lead time together.

Frequently Asked Questions

  • What is the difference between CrV and CrMo steel?

    CrV (chrome-vanadium) is the standard hand-tool steel: hard and springy, ideal for hand tightening. CrMo (chrome-molybdenum) is tougher and takes impact, which is why impact sockets use it. A CrV socket on an impact wrench will shatter.

  • What does the VDE mark mean?

    That the tool has been individually tested for work on live parts up to 1,000 V, at a test voltage above the working voltage. A plastic handle alone does not make a tool VDE.

  • Which square drive should I choose?

    1/4" for fine, low-torque work, 3/8" for general maintenance, 1/2" for wheels, chassis and other high-torque jobs. The drive sets the maximum torque and should match the ratchets you already own.

  • Why does jaw hardness matter on pliers?

    The hardness of the cutting edge, quoted in HRC, decides which wire it can cut. A soft edge dulls or notches on hard wire, and where no hardness figure is given the cutting capacity is unknown too.

  • What is the difference between PH and PZ tips?

    Phillips (PH) and Pozidriv (PZ) look similar but the recess geometry differs. A PH tip in a PZ screw cams out and rounds the recess; the extra tick marks on the screw head identify PZ.

  • How are wrenches numbered?

    By jaw opening in millimetres — a 13 wrench has a 13 mm opening. DIN 3113 defines the geometry of open-end wrenches.

  • Does piece count matter when buying a tool set?

    Which sizes are in it matters more. A 100-piece set can be mostly bits; check the wrench and socket sizes you actually use are included.

  • Are chrome-plated tools stronger?

    No. Chrome plating resists corrosion and makes cleaning easier; strength comes from the steel grade and heat treatment.

  • Do impact wrenches need special sockets?

    Yes. Impact sockets (CrMo, usually black) are made for it. Bright chrome hand sockets can shatter under impact.

  • How do wholesale and trade accounts work?

    Send the model list and quantities and we will return stock, wholesale pricing and lead time together. For businesses ordering regularly we can also share dealer terms.