Bosch 2608901549 PRO Multi Material Hole Saw Q-Lock Arbor Set, 15 Pieces

Bosch 2608901549 PRO Multi Material Hole Saw Q-Lock Arbor Set, 15 Pieces

The Bosch 2608901549 is a 15-piece PRO multi material hole saw set covering eleven diameters from 20 mm to 76 mm (20, 22, 25, 32, 35, 40, 44, 51, 60, 68 and 76 mm), each with a 44 mm cutting depth. The saws use 8% cobalt bi-metal, which Bosch rates to last up to twice as long as a standard HSS M3 hole saw, and mount on Q-Lock arbors for fast changes between sizes. Suitable for softwood, drywall, plastics, metal pipes and profiles, and non-ferrous metals, on rotary drills and impact drill/drivers.

The whole first-fix range in one case

Electricians and plumbers reach for hole saws constantly — pipe runs, back boxes, downlights, extract ducting, cable entries — and the frustration is rarely the cutting. It's carrying three sets because one covers wood, another covers metal, and neither covers the size you actually need on the day.

This set answers that with a single case. Eleven diameters span the sizes interior installation work actually calls for, from 20 mm cable entries up to 76 mm ducting and downlight cutouts, and one tooth specification handles every material group along the way.

Key features

• 8% cobalt bi-metal — HSS with 8% cobalt for long life and high efficiency in metal and other tough materials
• Up to 2x the life of a standard HSS M3 hole saw
• Q-Lock arbors — fast, tool-free changes between hole saw sizes
• Eleven diameters, 20–76 mm — covers the full range of interior installation work
• 44 mm cutting depth across every size in the set
• Multi material — softwood, drywall, plastics, metal pipes and profiles, and non-ferrous metals
• Works with rotary drill/drivers and impact drill/drivers, corded or cordless

Why 8% cobalt matters

Standard bi-metal hole saws use HSS M3 teeth. This set uses HSS with 8% cobalt, a harder, more heat-resistant grade. Hole saws fail from heat, not from impact — as the teeth warm, the edge softens, and once it softens it rounds off within a few holes. Cobalt raises the temperature at which that happens, which is why Bosch rates these to last up to 2x longer than a standard HSS M3 hole saw.

The practical difference shows up in metal. Cutting steel stud track, metal pipe or non-ferrous profiles is what kills a cheap hole saw fastest, and it's exactly where the cobalt grade earns back the price difference.

Q-Lock: changing sizes without tools

A typical hole saw change means unscrewing the saw from the arbor, finding the next size, threading it on, checking the pilot drill is seated. On a ladder, with gloves on, that's a minute you lose every time.

Q-Lock is Bosch's quick-change arbor system — the saw releases and locks with a sleeve rather than a thread, so swapping diameter takes seconds and needs no second tool. Across a day of mixed first-fix work, where you might change size a dozen times, that adds up.

Size guide — what each diameter is for

At 44 mm cutting depth, every saw in the set clears a standard timber stud or a double-boarded partition in one pass.

Materials and machines

Rated for softwood, drywall, plastics, metal pipes and profiles, and non-ferrous metals, and for general construction and interior materials including wood, drywall, glass-reinforced plastic (GRP) and metals. Runs on rotary drill/drivers and impact drill/drivers, corded or cordless.

Getting the best life out of the set

Run at a low to moderate speed with hammer action switched off — and drop the speed further as diameter increases, because the rim of a 76 mm saw travels nearly four times as far per revolution as a 20 mm one. Let the pilot drill establish the centre before the crown engages, then use light, steady pressure. In metal, add cutting fluid and clear swarf regularly; in board and timber, ease off at breakthrough so the saw doesn't snatch. Eject the slug through the side slot as soon as each cut is finished.

What's in the box

1 x Bosch PRO Multi Material Hole Saw Q-Lock Arbor Set — eleven hole saws (20, 22, 25, 32, 35, 40, 44, 51, 60, 68 and 76 mm) with Q-Lock arbors and pilot drills, 15 pieces in total.

Specification

Frequently asked questions

What sizes are in the Bosch 2608901549 hole saw set? Eleven diameters: 20, 22, 25, 32, 35, 40, 44, 51, 60, 68 and 76 mm. The set is 15 pieces in total, including Q-Lock arbors and pilot drills.

How deep will these hole saws cut? 44 mm — enough to clear a standard timber stud or a double-boarded plasterboard partition in a single pass.

What materials will the Bosch 2608901549 set cut? Softwood, drywall, plastics, metal pipes and profiles, and non-ferrous metals, plus general construction and interior materials including glass-reinforced plastic.

What is Q-Lock? Q-Lock is Bosch's quick-change hole saw arbor system. The saw locks and releases with a sleeve instead of a thread, so you change diameter in seconds without a second tool.

Why 8% cobalt? Cobalt raises the temperature at which the cutting edge softens. Hole saws blunt from heat rather than impact, so a higher cobalt content directly extends life — Bosch rates these at up to twice the service life of a standard HSS M3 hole saw, with the biggest difference showing in metal.

Is there a 68mm hole saw in this set for electrical back boxes? Yes. 68 mm is included, which is the standard size for drywall electrical back boxes.

Does the set include an arbor and pilot drill? Yes — Q-Lock arbors and pilot drills are part of the 15-piece count, so the set is ready to use out of the case.

Will it work with an impact driver? It is rated for rotary drill/drivers and impact drill/drivers. Use a low to moderate speed and keep hammer action switched off.

Can these hole saws cut tiles, masonry or brick? No. This set is specified for softwood, drywall, plastics and metals. Masonry, tile and concrete need a carbide or diamond-tipped hole saw.