GARHWAL 68mm Bi-Metal Hole Saw Set for Wood, Metal & Wall Work

Overview

If you’re doing DIY or small trade-style installs, a 68mm hole saw is the kind of tool that makes sense to own rather than borrow. The GARHWAL bi-metal hole saw set is aimed at cutting clean holes through a mix of materials you’d typically run into on wall and boxing-in work, from timber and boards to some metals and common plastics.

On paper, it’s designed around stable drilling: it includes a triangular shank adapter and a centring drill bit, which should help reduce wandering when you start. It also targets a depth of cut up to 30mm, which is useful if you’re working with wall conduits, sockets, or flush fitting boxes where you don’t just need a quick pilot hole.

That said, this isn’t a magic wand. With hole saws, the material and your setup matter a lot. If you need repeated, heavy-duty cutting through thick, tough metal, you may find you want a more specialised setup. For everyday installs and mixed-material jobs, though, this set looks fairly practical.

What it’s for (and where it fits)

This GARHWAL hole saw is positioned for a broad range of uses, including cutting soft steel, aluminium, wood (including metal-containing wood), MDF, WPC, plastic, chipboard, plasterboard, and even applications like cutting openings for flush wall boxes, hollow back boxes, LED downlight style openings, or sockets.

A helpful way to think about it: it’s not just for one “job of the day”. It’s the sort of hole saw you reach for when you’re planning multiple wall penetrations in one go—say, routing services for a kitchen or finishing off an area with several sockets and conduit runs.

Example in real terms: you mark and centre the position, use the included centring drill bit to start the hole accurately, then run the hole saw through the board and into the cavity. Keeping a steady pace helps you avoid overheating and keeps the cut looking less ragged.

Cutting approach and why the design matters

Two parts of the build stand out from the description. First, the bi-metal construction uses HSS with an 8% cobalt alloy. That’s the kind of material choice aimed at improving wear resistance and holding up when you’re drilling through harder or mixed materials.

Second, the tooth pitch is given as a variable 4/6 teeth per inch. The claim here is more uniform cutting, with a geared design intended to optimise cutting performance—particularly noted for steel. In practical terms, variable tooth design usually helps smooth out the cutting action compared with a simpler, more “fixed” tooth pattern.

There’s a sensible limit to keep in mind: the set is rated for a cutting depth up to 30mm and is built around a 13mm chuck size. If your work expects a deeper bite or a different chuck setup, you’ll need to check that before you buy.

What’s included (so you’re not missing the essentials)

One reason this kit is easier to pick than a bare hole saw is that it’s not leaving you to hunt for compatibility parts. The package includes: - A triangular shank adapter - A centring drill bit

That combination is meant to support stable drilling, helping you start straight and maintain control as the teeth bite.

Technical details you should double-check

The key “make or break” specs from the listing are straightforward. You’re looking at a 68mm hole saw diameter, intended for a chuck that takes 13mm, with a cutting depth of up to 30mm.

Also worth noting: while it’s described as suitable for a wide mix of materials, the finish and speed will still depend heavily on how you drill (feed pressure, alignment, and whether you use cutting lubricant where appropriate). If you’re expecting perfect edges in every material with no clean-up, it might leave you doing a little extra tidying.

Who it suits (and who might want to look elsewhere)

This GARHWAL hole saw set is likely a good fit if you do regular DIY and light trade-style work where you need one tool that can handle common wall and service installation materials. It suits people cutting openings for wall-mounted or flush fittings, and anyone tackling projects like kitchen conduit runs or adding sockets and LED-type penetrations.

It may not be the best choice if you’re aiming for fast, continuous production in very demanding metalwork, or if your jobs commonly require a deeper cut than the stated 30mm. Also, if you already know you’ll be using a different chuck size, the 13mm requirement could be a deal-breaker.

Final verdict

Worth considering if you want a 68mm bi-metal hole saw set that’s set up for stability (centring bit plus adapter) and is designed for mixed-material wall and fitting work. It’s positioned more toward practical value for everyday installs than ultra-specialist industrial cutting.

If you need a precise fit and clean edges every time, keep your expectations grounded: hole saw performance still depends on your technique, and you may need finishing work afterwards.

Quick FAQ

How deep can it cut?

The listing states a cutting depth of up to 30mm, so it’s worth checking your wall thickness and the cavity space you’re working with.

What chuck size does it need?

It’s described as suitable for 13mm drill chucks, so confirm your drill setup matches before buying.

Does it include the centring bit?

Yes—according to the description, the set includes a centring drill bit and a triangular shank adapter.

Can it cut wood and metal?

It’s described as suitable for wood and for soft steel/aluminium, plus other listed materials like MDF, WPC and plastics. The exact results will still depend on your drilling method and material type.

Is it good for plumbing and conduits?

The description specifically mentions plumbing, conduits, wall boxes and similar service openings, which is the main context it’s aiming at.