Carbide Hole Cutter 1-3/8 in - Heavy Duty Stainless Steel Cutter

Our review finds the 1-3/8 in carbide hole cutter best for tradespeople and fabricators who need a fast, reliable way to cut clean holes in sheet metals. The single biggest reason to buy is its ability to cut through tough materials like stainless steel and mild steel with a durable carbide edge that stays sharp under heavy use. In this review the cutter proved precise thanks to a split point pilot drill that limits wandering and an integrated flange that prevents over-drilling on thin sheet metal, making it a practical choice for conduit and pipe fitting work.

Key Features

• Premium carbide construction: The carbide teeth deliver sustained sharpness for cleaner cuts and longer service life when cutting metal sheets.
• Heavy-duty cutting capability: Cuts stainless steel, mild steel, iron, copper, and brass sheets up to 3/16 in thick, allowing use on a wide range of metal fabrication tasks.
• Split point pilot drill: The pilot prevents bit wandering for more accurate hole placement and reduced touch-up work.
• Integrated flange stop: The built-in flange stops over-drilling on sheet metal surfaces, protecting underlying material and improving repeatability.
• Replacement pilot compatible: Accepts a replacement pilot bit for extended tool life and easy serviceability in the field.
• Fits common conduit sizes: Sized for 2 in conduit and pipe so it integrates with standard electrical and plumbing fittings.

Who It's For

The cutter is aimed at electricians, HVAC technicians, metal fabricators, and DIYers who regularly work with sheet metals and need a straightforward, robust tool for cutting precise holes for conduit and pipe. It is most useful where speed and repeatable accuracy across stainless steel and other ferrous and non-ferrous sheets are required.

Those who should look elsewhere include users who only cut very soft materials like thin plastic or wood, where a less expensive wood or bi-metal hole saw would suffice, and users who need holes significantly larger or smaller than 1-3/8 in, as this model is specific to that size and to 2 in conduit applications.

Pros & Cons

Pros

• Clean, fast cutting in stainless steel and mild steel thanks to a sharp carbide edge.
• Durable build and carbide construction that many users report outlasts cheaper hole saws.
• Split point pilot and flange stop improve accuracy and prevent over-drilling on sheet metal.
• Good value for professional use when longevity and cut quality matter.

Cons

• Pilot bit can be a wear point and some users report breakage under heavy side load, so carrying a replacement pilot is advisable.

Specifications

Brand	Klein Tools
Size	1-3/8 in
Material	Carbide cutting edge
Max sheet thickness	Up to 3/16 in
Pilot	Split point pilot drill, replacement compatible (Cat. No. 31874)
Intended use	2 in conduit and pipe sizes; stainless, mild steel, iron, copper, brass

Our Verdict

The 1-3/8 in carbide hole cutter is a smart buy for professionals who need reliable, repeatable holes in sheet metal. Its carbide teeth and pilot design deliver clean cuts and controlled drilling that justify the investment, especially for routine conduit and pipe installation work. Keep a spare pilot bit on hand to avoid downtime.

Frequently Asked Questions

What materials can this cutter handle?
The cutter is designed for stainless steel, mild steel, iron, copper, and brass sheet up to 3/16 in thick.

Will it over-drill thin sheet metal?
No, the integrated flange stop limits over-drilling on sheet metal surfaces for more consistent hole depth.

Is the pilot replaceable?
Yes, it accepts a replacement pilot bit (replacement pilot Cat. No. 31874) to extend service life.