Bosch HBT225 2-1/4 In. M42 Bi-Metal Hole Saw 8% Cobalt Triangle Slot Design for Wood Metal Drywall Professional Grade Cutting Accessory

In stock
SKU: HBT225
Regular price $9.89 USD

Experience Superior Durability and Cleaner Cuts with the Bosch M42 Cobalt Bi-Metal Hole Saw

Upgrade your drilling arsenal with the Bosch Bi-Metal M42 Hole Saw, a professional-grade accessory engineered for heavy-duty applications. This 2-1/4 inch cutter is manufactured from Bosch's enhanced M42 alloy material, infused with 8% cobalt. This premium composition allows the saw to withstand extreme high-temperature applications, delivering clean, precise cuts while offering a lifespan up to 20% longer than standard bi-metal equivalents. Whether you are a professional contractor or a dedicated DIYer, this tool provides the resilience needed to bite through tough materials like wood, metal, drywall, and plastics without losing its edge.

Efficiency is built into every aspect of this design. The hole saw features an innovative triangle slot design, often referred to as a "shark tooth" shape, which significantly improves the ease of plug removal and reduces heat buildup during operation. Combined with the Progressor tooth design—which utilizes alternating tooth sizes for faster cutting—and reinforced shoulders for added structural integrity, this accessory is built to perform. The deeper cup allows for drilling through thicker materials in a single pass, ensuring your projects move forward without unnecessary interruptions.

Note: Arbor and pilot bit are sold separately.

Key Features

  • Enhanced M42 Alloy Construction: Contains 8% cobalt to resist high heat and extend tool life by up to 20% compared to standard bi-metal saws.
  • Triangle Slot Design: Unique side slots facilitate rapid plug removal and efficient heat dissipation for continuous workflow.
  • Progressor Tooth Geometry: Alternating tooth sizes cut faster and cleaner across various materials including wood, metal, and plastic.
  • Reinforced Shoulders: Added structural strength prevents tooth stripping and ensures longevity under rigorous use.
  • Deep Cup Capacity: A 1-3/4 inch drilling depth allows for cutting through thick dimensional lumber and multi-layer drywall ease.
  • Universal Compatibility: Works seamlessly with standard arbors and is optimized for the Bosch SpinLOCK system.

What's Included:

  • (1) 2-1/4 In. Bi-Metal M42 Hole Saw (Model HBT225)

Specifications

Model Number HBT225
Hole Saw Diameter 2-1/4 In.
Cutting Depth 1-3/4 In.
Material Composition Bi-Metal M42 (8% Cobalt)
Teeth Per Inch (TPI) 5 TPI
Tooth Design Progressor (Variable Pitch)
Arbor Included No (Sold Separately)
Plug Removal Type Triangle Slot / T-Slot
Recommended RPM (Wood) ~ 390 RPM
Recommended RPM (Mild Steel) ~ 195 RPM
Application Material Wood, Metal, Plastic, Drywall
Pro-Tip: When drilling through metal, use the triangle side slots to apply a small amount of cutting oil directly to the teeth; this helps dissipate heat even further and prevents the cobalt alloy from dulling prematurely.