Champion CT7 1-3/8 in Carbide Tipped Hole Cutter - Fast, Accurate Cuts

Our review of the Champion CT7 1-3/8 in Carbide Tipped Hole Cutter finds it ideal for tradespeople who need a portable, dependable solution for cutting large holes in metal and other tough materials. The single biggest reason to buy is its Triple Edge Cutting System, which delivers fast, bur free holes through steel, stainless, aluminum and plastics up to 1 in thick while running from a standard electric drill. For electricians, plumbers, mechanics and contractors who value speed and clean edges on the job, this cutter is a practical upgrade from bi-metal holesaws.

Key Features

• Triple Edge Cutting System: Provides rapid, smooth drilling with minimal burrs so finished holes need little cleanup.
• Tungsten Carbide Tips: Offers longer tool life and sustained sharpness for repeated cuts in hard materials like stainless steel and cast iron.
• Ejector Spring: Pushes out the slug automatically to save time and reduce handling between holes.
• Safety Collar Stop: Prevents over penetration for safer, more controlled drilling in confined or delicate installations.
• Versatile Material Compatibility: Works in steel plate, iron, aluminum, copper, fiberglass and plastics up to 1 in thick, covering common shop and field tasks.
• Portable Drill Use: Designed for use with an electric drill so it is easy to deploy on site without special equipment.

Who It's For

The CT7 is best for electricians, plumbers, HVAC technicians, mechanics and contractors who need to cut accurate, repeatable large-diameter holes in metal or composite materials while working from a drill. Its design favors field work where portability, speed and reduced cleanup matter most.

Those who primarily cut wood with Forstner bits or who require extremely long life under continuous heavy production in dedicated machinery should consider purpose-built production tooling, since some users report mixed durability when the tool is abused or used without proper technique.

Pros & Cons

Pros

• Fast, clean cuts with minimal burrs thanks to the Triple Edge Cutting System.
• Carbide tips keep the cutter sharp and extend tool life compared with standard bi-metal holesaws.
• Ejector spring and safety collar increase productivity and reduce the risk of over drilling.
• Works across a wide range of materials including stainless steel and cast iron up to 1 in thick.

Cons

• Some users report inconsistent durability when the cutter is misused or overloaded, so proper technique and feed rates are important.
• Not intended for use in heavy automated production machines where dedicated tooling would be more appropriate.

Specifications

Product	CT7 Carbide Tipped Hole Cutter
Cutting Diameter	1-3/8 in
Maximum Depth of Cut	Up to 1 in
Shank Size	3/8 in for sizes through 3 in (full range has 3/8 in or 1/2 in)
Tip Material	Tungsten carbide tipped
Compatible Materials	Steel, stainless steel, iron, aluminum, copper, cast iron, fiberglass, plastics
Drive Tool	Electric drill

Our Verdict

The Champion CT7 1-3/8 in Carbide Tipped Hole Cutter is a solid choice for professionals who need fast, clean holes in metal and mixed materials while working with an electric drill. It offers clear advantages over bi-metal holesaws in cut quality and convenience, and represents good value for tradespeople who use it with proper technique and moderate duty cycles.

Frequently Asked Questions

Can this cutter be used in stainless steel?
Yes, the CT7 is rated to cut stainless steel up to 1 in thick when used with appropriate drill speed and coolant if needed.

Will it work in a handheld electric drill?
Yes, it is designed for use in a standard electric drill and includes an ejector spring and safety collar for safer handheld operation.

How does it compare to bi-metal holesaws?
The CT7 cuts faster with smoother, bur free edges and typically longer life due to tungsten carbide tips, though proper technique is important to avoid premature wear.