Bosch drill bit set GO21

For everyday drilling around the home, a set that covers wood, plastic and light-gauge metal can be more useful than a collection aimed at one material. The Bosch GO21 is a 21-piece general-purpose drill bit set, with gold oxide coating and shanks designed to fit standard three-jaw drills.

For example, it could suit a small job such as making a hole in a wooden shelf, then handling a separate light-gauge metal task with the appropriate bit. The listing also names plastic as a suitable material, so its appeal is in covering a few common jobs rather than focusing on a specialist application.

How to use it

The set is described for use with both corded and cordless drills that have a standard three-jaw chuck. That gives it a straightforward place in a basic home toolkit if your projects move between wood, plastic and light-gauge metal. The listing does not give individual bit sizes beyond noting that bits 1/8 in. and larger have 135° split-point tips, so it does not provide enough detail to plan a job around a specific diameter.

Those split points are intended to reduce bit walking as a hole starts. That may be useful when positioning a bit on a flat surface, though the description does not say that every bit in the set has this tip. The gold oxide coating is presented as a way to resist heat buildup and extend bit life, it is a stated benefit, not a guarantee of how long the bits will last in a particular material or drilling routine.

Pros

The main advantage is coverage across three listed materials, paired with shanks that fit standard three-jaw drills. If you want a general-purpose set for occasional household jobs, that is a more practical brief than buying a set intended only for wood. The coated finish and split-point tips on the specified larger bits are useful details, rather than a promise that the set is suited to every kind of drilling.

It suits you if your projects are varied but relatively ordinary, and you want one set for compatible corded or cordless drills. What if your work involves masonry, thicker metal or a precise hole size? Those uses are not included in the product description, so a more specialised set with clearly listed sizes and applications would be the safer choice. The listing also does not specify the full size range or the material the bits themselves are made from.

Spec sheet

• Name: Bosch GO21
• Type: General-purpose drill bit set
• Format: 21-piece set
• Coating: Gold oxide
• Shank: Standard, for three-jaw drills
• Listed materials: Wood, plastic and light-gauge metal
• Tip detail: 135° split point on bits 1/8 in. and larger
• Drill compatibility: Corded and cordless drills with standard three-jaw chucks

What I’d decide

Based on what the listing says, the GO21 is aimed at convenience across common, light-duty materials, not at specialist drilling. I’d consider it for a household kit where the likely jobs are spread across wood, plastic and light-gauge metal, and where the drill has a standard three-jaw chuck. The listed coating and split-point design may help with heat resistance and starting a hole, but the available details do not establish the exact bit sizes or performance in demanding work.

It’s not for you if you need a confirmed size for a particular fitting, or if your regular jobs call for applications beyond those named. In that case, choosing a set with a clearly stated size range and a purpose matched to the material matters more than having a general-purpose assortment.