Tool sets: how to choose the right bag (for home, car and workshop)

Tool sets: how to choose the right bag (for home, car and workshop)

Searching for "tool set" , "complete tool kit" , "wrench and socket set" or "home tool kit" is one of those moments when the buyer wants something simple: to buy once and be well served .

The problem is that “108 pieces”, “216 pieces”, “chrome-vanadium”, “1/4”, “3/8”, “1/2”, “S2 bits”, “VDE 1000V”… and suddenly the choice becomes confusing.

This guide (PT-PT) helps you make an informed decision:

  • What type of case/kit makes sense for your needs?

  • What are the "essential" tools in a good kit?

  • How to assess quality (materials and standards)

  • Shopping checklists + FAQs to answer your questions

1) First step: what is the kit intended for?

Before you count the pieces, set the scene:

A) Home kit (DIY / small repairs)

Objective: assembling furniture, small fixings, faucets, handles, sockets (without working under voltage), light maintenance.

The key here is versatility , not "a thousand pieces".

B) Car kit (emergency and maintenance)

Purpose: simple tightening, brush replacement, battery replacement, minor repairs and quick fixes — with a compact and durable case.

C) Workshop/garage kit (for frequent use)

Objective: more sockets, ratchets, extensions, combination wrenches, greater robustness and organization.

D) Electrician's kit (electrical safety)

There's no "middle ground" here: you're looking for isolated, certified (VDE/IEC 60900) tools designed for applications up to 1000V.

2) What a good set of tools should have

2.1 Socket set + ratchet (the "heart" of the bag)

For most repairs, a good socket set gets the job done 80% of the way.

What to look for:

  • ratchet with a good mechanism (smooth and durable)

  • Metric sockets (in Portugal, almost always what you need)

  • extensions (short and long)

  • universal joint (for hard-to-reach places)

Fitting sizes (square): 1/4", 3/8" and 1/2"

  • 1/4" : for light work and tight spaces (very common in home kits)

  • 3/8" : the most "balanced" for car and home.

  • 1/2" : for tighter grips (wheels, larger bolts, etc.)

Some manufacturers explicitly reference square drive standards such as ISO 1174 and DIN 3120 , which is a good sign of standardization and compatibility.

A shopping tip to avoid problems: standardized fitting = easier to buy extensions/sockets in the future without incompatibilities.

2.2 Wrenches (open-end, ring-shaped, combination)

Even with sockets, you'll need wrenches.

  • Combination wrench : typically with an open end on one side and a ring on the other — very versatile for mechanics and home use.

  • For auto maintenance/workshops, a small set of combination (metric) wrenches is invaluable.

2.3 Screwdrivers and bits (Phillips, Pozidriv, Torx, Allen…)

This is where a lot of people ruin screws.

In practice, you should have:

  • flathead + Phillips screwdrivers

  • Torx and Allen/Hex bits (widely used in furniture, bicycles, and electronics)

  • Ideally, also Pozidriv (PZ) , because it looks like Phillips but isn't the same.

There are several types of screwdriver bits (Phillips, Torx, Posidriv, Allen, etc.) and it's good to have bits for the most common ones.
Regarding Phillips vs. Pozidriv: the Pozidriv has a design with an additional crosshead and tends to transmit torque better, reducing the likelihood of "slipping" (cam-out).

Bit quality: S2 steel
For bits, look for references to S2 steel , which is common in "quality" bit sets and appears in tool brands and catalogs.

2.4 Pliers (universal, cutting, needle-nose)

In a "good for home" kit, at least:

  • universal pliers

  • cutting pliers

  • (ideal) needle- nose pliers for fine work

2.5 Measurement and “support parts”

A set focused solely on wrenches/sockets might fall short on the basics. Simple items that add value to your bag:

  • measuring tape

  • utility knife/box opener

  • small level

  • clamps/bridles (in larger kits)

  • small hammer (if it makes sense)

The idea is the same as that found in luggage selection guides: to ensure variety and suitability for the tasks at hand.

3) Materials: “Cr-V”, “Cr-Mo”, “S2”… what does this mean in practice?

3.1 Chromium-Vanadium (Cr-V)

Many hand tools (wrenches/sockets) are marked as Cr-V . Generally speaking, it is an alloy steel known for its good strength and durability for tools (this is a frequent claim in tool catalogs).

3.2 S2 Steel (bits/tips)

As we have already seen, S2 appears frequently in precision bits and sets, as it is a typical material for durable bits.

3.3 Standards and certifications (not "marketing")

  • ISO 1174 / DIN 3120 : Standardization of square drive for sockets and accessories.

  • IEC 60900 / VDE 1000V (electricity): insulated tools for work on/near energized parts up to 1000V AC and 1500V DC, with testing and marking requirements.

4) 1000V VDE Kits: When you need them (and when you should NOT improvise)

If you are going to work on electrical panels, circuit breakers, electrical installations, or near live voltage, the safest option is an insulated kit that complies with IEC 60900 and has appropriate markings.
There are specific ranges of insulated tools for protection up to 1000V (for example from manufacturers such as Bahco).

Important: This is a different category. It's not "just another key"—it's security.

5) How to choose the right set size (without falling into the "pieces" trap)

Rule of thumb:

  • House/apartment : 50–120 well-chosen pieces usually arrive.

  • Car + Home : 100–150 pieces with sockets + bits + combination wrenches

  • Workshop : 150+ items including a variety of sockets, extensions, and wrenches.

A typical example of a "complete household" product is a bag with 100+ pieces that focuses on everyday tasks.
But the most important thing is: the right parts (metric gauges, standard bits, a good ratchet) and good organization.

6) Suitcase/case: organization and transport also matter.

A good tool case saves time (and prevents lost tools). Automotive retailers highlight the practical advantages of a multi-tool bag: organization, protection, and transport.
And tool brands have complete lines of hard cases/bags geared towards efficiency and organization.

Search:

  • Secure fittings (tool doesn't "dance" in the bag)

  • sturdy fasteners

  • (if large) wheels / comfortable handle

Purchase checklist (quick and effective)

  • Use: home, car, workshop or electricity (VDE/IEC 60900).

  • Sockets with 1/4" and/or 3/8" drive (and 1/2" if necessary) + ISO/DIN standards.

  • Combination wrenches (open-end/open-end) in metric.

  • Bits: Phillips + Pozidriv + Torx + Allen; ideally S2 steel.

  • Essential pliers (universal + cutting).

  • Organized and sturdy suitcase for transport.

FAQ

Does "Cr-V" mean it's good?
Cr-V is a type of alloy steel that is very common in hand tools and is generally associated with durability, but the overall quality also depends on finish, tolerances, and brand/warranty.

Do I really need Pozidriv (PZ) if I already have Phillips (PH)?
It helps a lot: Pozidriv was designed for better torque transmission and less "slippage," and PZ screws are very common in wood/furniture.

What are VDE 1000V tools for?
These are insulated tools for electrical work, compliant with IEC 60900 for use up to 1000V AC/1500V DC, with markings and tests defined by the standard.