Tools
Wiha 65 Piece System 4 ESD Safe Master Technician Ratchet and Micro Bit Set Review
A comprehensive ESD-safe precision bit set in a compact metal case, with strong bits, a stiff ratchet, and a few trade-offs worth knowing before you buy.
Introduction
Wiha has a reputation for making genuinely good precision bit sets, and the 65 Piece System 4 ESD Safe Master Technician Ratchet and Micro Bit Set is one of the most complete versions of that formula. Everything ships in a small, sturdy metal case, and the set is built around the company’s quarter-inch hex ratchet, a driver, and an extension. If you work on electronics or small devices and want one box that covers nearly every fastener you are likely to meet, this is a serious contender.
Who This Product Is For
This set makes the most sense for technicians and serious DIYers who open up electronics regularly. The ESD-safe design, the wide selection of Pentalobe sizes, and the anti-static conductive driver all point squarely at precision electronics work. Casual users who only need a handful of bits will find it more set than they need, and there are cheaper alternatives that cover the basics.

What You Get in the Box
The full official name says a lot: the Wiha 65 piece System 4 ESD safe master technician ratchet and micro bit set. The case itself is marked made in Germany, and inside you get the quarter-inch hex ratchet, a driver, an extension, and a comprehensive spread of micro bits. The headline feature is the small square of nut drivers covering both fractional SAE and metric sizes, roughly from 1.5 mm up to 5.5 mm on the metric side and from 5/64 to 7/32 on the SAE side.
It also carries what is probably the most complete Pentalobe selection around, running from P1 through P6, alongside standard Torx, Phillips, and both standard and metric hex bits. On top of that, an adapter lets you run the 4 mm System 4 bits in a quarter-inch hex driver, which adds real flexibility if you already own Wiha’s larger handles.

Bit Quality and Fit
The bits themselves are high carbon tool steel and are branded and well formed. Under magnification the tips look crisp and precisely machined, and they seat snugly in the driver. The driver uses a captive friction device, a small internal ball that creates friction to hold the bit in place, rather than a magnetic retention system. That works, though the magnetic attachment used in some of Wiha’s other sets is arguably more convenient.

Ratchet and Driver Impressions
The ratchet has notably stiff back drag. Turn it slowly enough and it will actually rotate a full circle before it breaks free, which is a fair bit of resistance for a precision tool. It takes some getting used to, and the adapter is needed to run it with these bits. The ESD handle itself is a bright yellow, conductive anti-static design with a fully tapered grip. It is a harder plastic than the softer rubberized handles on some other sets, and a little more texture near the taper would help when spinning it between fingers, but the overall feel is solid.
Things to Consider Before Buying
Priced at roughly $92 on Amazon at the time of checking, this sits near the top of the precision bit set market. iFixit is probably its biggest competitor, and a comparable kit will run close to $100 while including more case-opening tools and tweezers. If you want those extras, iFixit may suit you better. If you simply want high quality bits in a compact metal box, Wiha is the stronger pick, and the company’s warranty support has proven reliable in practice.
Buying Advice

For anyone upgrading from a basic kit or jumping straight into a comprehensive precision set, this Wiha offering is easy to recommend. You are paying for bit quality, breadth of coverage, and an ESD-safe system rather than for a drawer full of accessories. Check the current price before buying, since it fluctuates around the $90 mark.
Conclusion
The Wiha 65 Piece System 4 ESD Safe Master Technician set is a well-rounded, comprehensive precision kit with excellent bits, a broad nut driver and Pentalobe selection, and a compact metal case. The stiff ratchet back drag and harder handle material are the main compromises, but for electronics technicians who want quality bits above all else, it earns its place on the bench.
Product link
View more details for Wiha 65 Piece System 4 ESD Safe Master Technician Ratchet and Micro Bit Set
This product is mentioned in the review. Check the specifications, options, and compatibility before buying.
View more details for Wiha 65 Piece System 4 ESD Safe Master Technician Ratchet and Micro Bit Set