Sutton H125 25mm Bi-Metal Cobalt M42 Holesaw

The Sutton H125 is a 25mm holesaw, the 1 inch size, made from bi-metal cobalt HSS and built for clean round holes in steel, stainless steel, cast iron, non-ferrous metals, plastic and wood to a depth of 32mm. The 25mm size is one of the most used holesaws in the trade, covering cable, conduit and general sheet metal work. This size sits on the UA1 arbor with a BD24 or BD26 pilot.

Key Features

• Bi-metal cobalt HSS for toughness and longer life
• 32mm cutting depth
• International thread standard accepts all standard arbors
• Listed for the UA1 arbor
• Suits machine or hand held drilling
• Cuts steel, stainless steel, cast iron, non-ferrous metals, plastic and wood

Specifications

• Diameter: 25mm (1 inch)
• Model: H125, white label series
• Material: bi-metal cobalt HSS
• Cutting depth: 32mm
• Thread: international thread standard
• Arbor and pilot: UA1 arbor, BD24 or BD26 pilot drill

Applications

• Conduit and cable holes through steel enclosures
• Electrical panel penetrations
• Door and lock hardware holes in steel
• Sheet metal and light fabrication
• Timber, plywood and plastic panels

What You Need To Complete The Job

Pair this 25mm saw with a BD26 pilot drill and a quick fit arbor. In metal, use a cutting lubricant; for concrete or brick, use an SDS masonry drill instead. More trade hand tools are under Carpentry Tools.

Frequently Asked Questions

Why is the 25mm holesaw so widely used?

Because 25mm, the 1 inch knockout, is the standard entry size for conduit, cable and a great deal of switch and outlet work in steel panels. It is small enough to be easy to drive and big enough for most everyday cable runs, so it earns a place in almost every trade kit.

What arbor does this saw need?

The listing gives the UA1 arbor for this size, with a BD24 or BD26 pilot drill. The UA1 is the lighter arbor class for the smaller H125 sizes. The international thread means a standard quick fit arbor will also thread on if that is what you already own.

Can I use it in a cordless drill?

Yes. A 25mm saw is well within the range of a standard 18V cordless drill. Run at a moderate speed, let the pilot start the hole, and feed steadily. It is one of the easiest holesaw sizes to drive by hand.

Does the saw come with a pilot drill?

No, the pilot drill is sold separately. The saw body threads onto the arbor and the arbor carries the pilot. Keeping a sharp BD24 or BD26 pilot in the kit makes every holesaw cut start cleanly and run true.