Champion CT7P-MECHANICAL-1 12 Piece Master Mechanical Hole Cutter Set

Comprehensive Size Range: Includes 12 cutter diameters: 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-3/4", 2", 2-1/2", and 3". This covers most mechanical, duct, stove-bolt, and pipe clearance applications. 

Carbide-Tipped Teeth: Ultra-hard tungsten carbide teeth for excellent wear resistance. Great for cutting through steel plate, stainless, iron, aluminum, copper, and other metals.

1-Inch Depth of Cut: These cutters can handle metal up to 1″ thick. That’s much more than many basic holesaws allow. 

Slug Ejector Spring: After a cut, the metal slug is ejected automatically, reducing downtime and improving efficiency. 

Safety Collar Stop: A built-in stop to prevent over-penetration, improving safety and control. 

Triple-Edge Cutting Geometry: Two sets of three blades each with different geometries, designed to balance cutting forces—giving smoother cuts, less tool deflection, and better control. 

One-Piece Construction: No assembly required, stable and accurate drilling. 

Shank Sizes: Smaller diameters (5/8″–3″) use 3/8″ shank; larger sizes typically use 1/2″ shank. 

Durable Case: Comes in a molded plastic case which keeps all cutters organized and protects the teeth.