Bosch PRO Metal HSS-G twist drill bits, Ø 10.5 mm (5 pieces, working length 87 mm) enable precise and reliable drilling in metal materials, which makes work significantly easier for every user who expects professional results even in home projects. The drill bits are characterized by exceptional sharpness and resistance, pushing the boundaries of quality for everyone who wants to work metal efficiently without complications.

Evaluation of key product features

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The set is suitable for DIY enthusiasts, experienced craftsmen and all consumers who need a reliable tool for drilling into various types of metals - such as stainless steel, steel, cast iron and non-ferrous metals. Thanks to the precision ground HSS-G steel, these twist drill bits are perfect for demanding projects in the workshop or in the field, where the quality of the holes is crucial.

The main advantage of these drills is their exceptional sharpness, which reduces friction and enables fast drilling progress. The HSS-G material ensures long-lasting sharpness and optimal power transmission, which means less effort and less wear on the drills, even with repeated use.

With a total length of up to 140 mm and a working length of 87 mm, they allow for drilling deep enough for most everyday metal jobs, while the Ø 10.5 mm is ideal for precise and clean medium-sized holes. The set of five drill bits ensures that you always have a spare bit on hand.

The drill bits stand out with a ground spiral flute that effectively removes chips and enables smoother drilling without jamming. Their precision and robustness convince those who value quality tools, while also enabling a smooth user transition between different projects. Bosch ensures that every metal drilling job is a step above average, without unnecessary compromises in speed or reliability.

Same summary

The Bosch PRO Metal HSS-G twist drill bits with a diameter of 10.5 mm and a working length of 87 mm are particularly suitable for those looking for a reliable solution for drilling in metal. The five-piece set makes sense for users who regularly perform precise or repeated drilling, both for their own home projects and in workshops. These drill bits are less suitable for users who want a universal tool for wood or concrete, as they are optimized specifically for metal materials. Despite their limited multi-purpose use, they offer a good balance between length, diameter and robustness for metal tasks.

Recommendation source: Enaa guides and team experiences.

User view

These drills will suit mainly home craftsmen, hobbyists and also those who often work with metal in the workshop - whether when assembling structures, repairing or manufacturing metal elements. The set allows for multiple repetitions of identical or very similar drillings, which is practical if the drill occasionally wears out or breaks.

Users often choose Bosch products because of their recognizable quality and repeatable reliability in the power tool segment.

Why buy at Enaa

You can practically choose from a wide range of drilling accessories in one place, where the technical differences are clearly presented according to the purpose of use, making it easier to choose the appropriate type and size of drill bit. When purchasing from Enaa, we support you with carefully prepared information and friendly user support, with which you can easily find the right product for your project.

Answers to frequently asked questions

What materials are these drill bits best suited for?

These twist drill bits are designed for drilling into various metal materials. For wood, concrete or ceramics, we recommend using other specialized drill bits.

Can a 10.5 mm diameter be used in standard fixtures?

Most modern drills and chucks support drill bits up to 13 mm in diameter, so using 10.5 mm diameter drill bits will be possible in most standard devices, provided the chuck length is appropriate.

What to do if the drill bit gets stuck or twisted while drilling?

If you notice strong resistance or the possibility of twisting, it is recommended to stop the drill immediately, remove it and check that it is suitable for the material and that the chuck is stable. Using a suitable drilling oil or lubricant can make drilling in harder metals easier.

How long do these drill bits last with regular use?

The typical life of these drill bits depends primarily on the method of use, drilling speed and hardness of the material. When used correctly and at the appropriate speed with proper cooling, they stay sharp for a longer time.

Is this kit a sensible purchase for individuals who only occasionally drill into metal?

A set makes sense if you need a certain dimension several times or want to have a spare in case of wear; for infrequent use, a pack with fewer pieces or a single drill bit may be sufficient.

Description updated: May 2026