Klein Tools 31872 Heavy-Duty Hole Saw Kit | 4-Piece Carbide Cutters & Pilot Bit

Overview

The Klein Tools 31872 Heavy-Duty Hole Saw Kit is a compact, four-piece carbide-tipped set built for demanding metalwork. The carbide tips resist wear, helping you punch clean, round holes quickly through a range of metals. The kit includes three commonly used punch sizes—7/8, 1-1/8, and 1-3/8 inches—plus an extra pilot bit so you can keep working when you need a spare.

Designed for accuracy and control, this kit features an integrated flange that prevents drilling beyond the sheet edge and a split-point pilot drill bit that minimizes wandering at start-up. All components live in a rust-proof molded plastic carrying case, making organization and transport simple on busy job sites.

Key design advantages

• Heavy-duty carbide hole cutters for long life
• Hole cutters cut quick, precise holes in sheet up to 3/16 inch thick in stainless steel, mild steel, iron, copper and brass
• Split point pilot drill bit prevents bit walking
• Integrated flange prevents drilling beyond the sheet metal edge
• Conduit and pipe sizes range from 1/2 inch to 1 inch
• All components are packed in a rust-proof molded plastic carrying case

What you get

• Three hole cutters in sizes 7/8 inch, 1-1/8 inch, and 1-3/8 inch
• One extra pilot bit
• Rust-proof molded case for secure storage

Why it works for real jobs

In practice, the carbide tips stand up to regular use, delivering consistent cut quality across common metals found in electrical, plumbing and fabrication work. The flange helps protect sheet edges while you work, and the split-point pilot bit reduces drift when starting a hole. The 1/2 to 1 inch conduit and pipe sizing increases compatibility with typical installation scenarios, from electrical boxes to small ductwork closures.

Heritage and durability

Klein Tools has a long-standing reputation for premium hand tools, rooted in American craftsmanship and family ownership since 1857. This kit reflects six generations of engineering focus, combining high-grade materials with practical design for daily professional use.

Use scenarios

• Electrical panels and cabinet knockouts
• Metal cabinetry, ductwork and sign fabrication
• Field service and shop projects requiring reliable, clean cuts
• Quick prototype work or temporary fixtures where round holes are needed

Note: performance depends on material and technique. This kit offers practical possibilities for faster, cleaner holes rather than guarantees.