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Wiha SlimBits Bit Set Review: Insulated slim bits for tight spaces

Wiha 38613, Schlitz/PH/SL+PZ (Klemmschrauben) im Blister, Red Yellow
4.7
[Safe Deep Access]  SlimBits enable secure access into deep spaces, improving safety during electrical work.
[Integrated Blade Safety]  Blades stored inside handle eliminate exposure, reducing injury risk.
[Space-Saving LiftUp System]  LiftUp electric reduces volume by 75% and weight by 50% for efficient storage.
[Insulated to IEC Standards]  Tested at 10,000 V and certified for 1,000 V AC per IEC 60900.
[Wiha slimVario Compatibility]  Designed for Wiha slimVario tools; not suitable for machine operation.
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Hand tools for electricians and tradespeople promising safer, neater screwdriving in confined spots. Enjoy greater confidence on live work and cramped junction boxes with better reach and safer storage. Does the convenience and safety justify choosing Wiha SlimBits Bit Set for everyday workshop use?

⚡ At a Glance
  • Access & Fit: Slim profile reaches deep or recessed screw heads for accurate engagement
  • Best for: Electricians and tradespeople who need insulated bits and access to tight locations
  • Not ideal for: High-speed machine operation, as the slimBits are not suitable for machines

SlimBits have been designed to provide protected access to deep screws. Each tool is individually tested at 10,000 V AC and approved for use at 1,000 V AC to IEC 60900.


Work safely on live circuits - with IEC 60900-rated insulation

Insulation on each tool is tested at 10,000 V AC and approved for safe use at up to 1,000 V AC, in line with IEC 60900 standards. Individual testing confirms consistent insulation integrity across the set.

Clearly reduces the risk when working near live conductors, giving confidence when tackling electrical installations and repairs.

Reach deep, recessed screws - with slimBits profile

SlimBits are shaped to access narrow, recessed screw heads and penetrate into tight cavities where standard bits cannot. Designed specifically for hand use with Wiha slimVario handles rather than machine operation.

Makes fiddly access jobs faster and more accurate, helping to avoid rounded heads and repeated attempts in confined spaces.

Carry less, carry more - with LiftUp electric compatibility

Compatibility with the Wiha LiftUp electric storage concept reduces required storage footprint by around 75% and weight by about 50% compared with traditional sets. The system organises bits efficiently for quick selection.

Easier workshop organisation and lighter toolkits for site work, so transport and storage become noticeably simpler.

✨ The 4 Key Reasons for Wiha SlimBits Bit Set
  1. Insulation tested to 10,000 V AC - Safe use on installations approved up to 1,000 V AC
  2. SlimBits profile - Accesses deep, narrow screw positions unreachable by regular bits
  3. LiftUp electric compatibility - Cuts storage volume by 75% and weight by 50%
  4. Durable release clips - Secure retention reduces accidental bit loss during work
📋 Technical Details at a Glance
  • Category: Screwdriver bit set
  • Brand: Wiha
  • Model number: 38613
  • Insulation testing: 10,000 V AC (individual tests)
  • Approved working voltage: 1,000 V AC (IEC 60900)
❓ Frequently Asked Questions

Q: Are these bits safe for working on live electrical circuits?

A: Each tool is individually tested at 10,000 V AC and approved for safe working at 1,000 V AC, meeting IEC 60900 requirements.

Q: Can the bits be used with impact drivers or power tools?

A: Customer feedback indicates compatibility with impact drivers, but the slimBits are designed for use with Wiha slimVario hand tools and not intended for machine operation.

Q: Will the bits work with Wiha storage systems?

A: Compatibility with Wiha LiftUp electric is specified, enabling reduced storage volume and lighter carry solutions.

🏆 Our Verdict

Well suited for electricians and tradespeople who need insulated, space-saving bits for awkward screw locations. A combination of IEC 60900 insulation testing, slim profile for deep access, and LiftUp compatibility makes these bits a practical choice for workshop and site use. While cost will be a consideration for some, long-term durability and safety mean the set represents sound value over time.