Sutton H125 57mm Bi-Metal Cobalt M42 Holesaw

The Sutton H125 is a 57mm holesaw built from bi-metal cobalt HSS, a step up into the pipe and vent class at just over 2 inches. It cuts to a 32mm depth and suits machine or hand drilling in steel, stainless steel, cast iron, non-ferrous metals, plastic and wood. The listing places it on the UA2 or QFX arbor with a BD24 or BD26 pilot, and the heavier rim means it wants a drill with a bit of torque behind it.

Key Features

• Bi-metal cobalt HSS for toughness and longer life
• 32mm cutting depth
• International thread standard accepts all standard arbors
• Listed for the UA2 or QFX arbor
• Suits machine or hand held drilling
• Cuts steel, stainless steel, cast iron, non-ferrous metals, plastic and wood

Specifications

• Diameter: 57mm (2.1/4 inch)
• Model: H125, white label series
• Material: bi-metal cobalt HSS
• Cutting depth: 32mm
• Thread: international thread standard
• Arbor and pilot: UA2 or QFX arbor, BD24 or BD26 pilot drill

Applications

• Plumbing pipe holes through floors and walls
• Exhaust and vent holes in metal and timber
• Large cable penetrations
• Downlight and duct fittings
• General fabrication and site work

What You Need To Complete The Job

Fit the saw to a quick fit arbor with a BD26 pilot drill and drive it with a drill that has steady low-end torque. Use a lubricant on metal cuts. For concrete or brick, use an SDS masonry drill instead. The full range is under Carpentry Tools.

Frequently Asked Questions

What is a 57mm holesaw used for?

A 57mm holesaw is common for plumbing and drainage pipe penetrations that run around the 50 to 56mm outside diameter, and for vents and exhaust fittings. It gives a hole just over 2 inches for pipe and ductwork through timber and metal.

How do I stop the saw chattering on a large hole?

Chatter usually comes from a blunt pilot, too fast a speed, or a loose arbor. Use a sharp BD26 pilot, make sure the saw is tight on the arbor, and run at a lower speed with steady pressure. Once the rim has a full circle of contact, the saw settles down.

Do I need two hands on the drill?

At 57mm the saw can grab as the teeth break through, so holding the drill firmly with both hands and keeping it square to the work is good practice. Ease the feed pressure right down on the exit so the saw does not snatch.

Can this saw cut metal roofing and cladding?

Yes. It is a useful size for cutting vent and exhaust holes through steel roofing and wall cladding. The bi-metal teeth cut the sheet cleanly, and the 32mm depth is plenty for single skin panels.