EXTRACUT Bi-Metal Hole Saws the toughness of a spring steel body with the cutting power of high-speed steel teeth, creating a versatile hole-cutting tool for sheet metal, wood, plastic, and composite materials. The bi-metal construction allows the saw to flex under cutting loads without breaking, while the M2/HSS cutting edge maintains sharpness through hundreds of holes in demanding production environments.
Key Features
- Bi-Metal Construction — HSS (M2) cutting edge electron-beam welded to a tough spring steel back — combines cutting hardness with body flexibility.
- Vari-Pitch Tooth Design — Alternating tooth pitch reduces vibration and noise while improving chip evacuation and cut quality.
- Deep Cut Capability — Body depths from 25mm to 50mm accommodate thick materials and multi-layer assemblies.
- Universal Arbor System — Standard pilot drill arbor fits most drill chucks; quick-change arbor options available for high-volume production.
- Cut Range Versatility — Effective on steel sheet (up to 3mm), aluminum, wood (up to 50mm), plastic, fiberglass, and drywall.
- Long Service Life — Bi-metal design resists tooth breakage and body cracking that plague single-material hole saws.
Applications
HVAC ductwork installation (round duct penetrations), electrical conduit routing through metal studs, plumbing pipe holes in wood framing, automotive panel drilling, sheet metal fabrication, cabinet hardware installation, and general maintenance requiring clean round holes in mixed materials.
Specifications
| Specification |
Value |
| Construction |
Bi-Metal: HSS (M2) Teeth + Spring Steel Body |
| Diameter Range |
Ø14mm – Ø100mm (9/16" – 4") |
| Cutting Depth |
25mm / 38mm / 50mm (varies by size) |
| Tooth Material |
M2 High-Speed Steel (65 HRC) |
| Body Material |
Spring Steel (42–45 HRC) |
| Arbor Fitting |
Standard Pilot Drill Arbor |
| Tooth Pitch |
Vari-Pitch (4/6 TPI alternating) |
| Speed (Steel) |
150 – 300 RPM |
| Speed (Wood) |
400 – 800 RPM |
| Coolant |
Recommended for steel > 2mm |
