Studio view of the white Bosch HBT450 4-3/4 inch bi-metal hole saw featuring the red Bosch logo and triangular side slots.
Infographic highlighting the hole saw's key features: triangle slot design, enhanced M42 alloy, progressor tooth design, reinforced shoulders, and a deeper cup.
Action shot of a worker using a Bosch cordless drill and the white hole saw to cut into a gray metal electrical panel box.
Close-up of gloved hands attaching the white hole saw to a pilot bit and arbor assembly against a wooden background.
Macro view of the hole saw's cutting edge, showcasing the sharp, alternating bi-metal progressor tooth geometry.
High-angle action shot of the hole saw drilling a clean hole into a beige interior door panel, with wood shavings visible on the surface.
A worker using a Bosch drill and the white hole saw to cut a hole in a white countertop surface.
Close-up action shot of the hole saw cutting into the side of a metal electrical enclosure, highlighting the tool's metal-cutting capability.
Studio view of the white Bosch HBT450 4-3/4 inch bi-metal hole saw featuring the red Bosch logo and triangular side slots.
Infographic highlighting the hole saw's key features: triangle slot design, enhanced M42 alloy, progressor tooth design, reinforced shoulders, and a deeper cup.
Action shot of a worker using a Bosch cordless drill and the white hole saw to cut into a gray metal electrical panel box.
Close-up of gloved hands attaching the white hole saw to a pilot bit and arbor assembly against a wooden background.
Macro view of the hole saw's cutting edge, showcasing the sharp, alternating bi-metal progressor tooth geometry.
High-angle action shot of the hole saw drilling a clean hole into a beige interior door panel, with wood shavings visible on the surface.
A worker using a Bosch drill and the white hole saw to cut a hole in a white countertop surface.
Close-up action shot of the hole saw cutting into the side of a metal electrical enclosure, highlighting the tool's metal-cutting capability.
BOSCH

Bosch HBT450 4-1/2 Inch Bi-Metal Hole Saw M42 Cobalt Alloy 5 TPI Progressor Tooth for Wood Metal and Plastic

In stock
SKU: HBT450
$38.29

Description

INDUSTRIAL STRENGTH AND SPEED FOR LARGE DIAMETER APPLICATIONS

Maximize your productivity on the job site with the Bosch HBT450 4-1/2 Inch Bi-Metal Hole Saw. Engineered for professionals who demand reliability, this hole saw is constructed from Bosch’s enhanced M42 alloy material, which contains 8% cobalt. This premium composition offers superior heat resistance and extends the tool's life by up to 20% compared to standard bi-metal cutters. It is the ideal choice for drilling large, clean holes in tough materials such as metal, stainless steel, wood, drywall, and plastic, making it a staple for electricians, plumbers, and general contractors.

The HBT450 is designed to solve common drilling frustrations. It features the innovative "Progressor" tooth geometry with an alternating 5 TPI pattern, ensuring faster cutting speeds and reduced vibration. The unique triangle "shark tooth" side slots improve heat dissipation and make plug removal efficient and hassle-free. With a reinforced shoulder for added strength against high torque and a deep 1-3/4 inch cup to handle thick materials, this hole saw delivers consistent performance cut after cut.

Key Features

  • M42 Cobalt Alloy: Contains 8% cobalt for exceptional heat resistance and significantly longer tool life.
  • Progressor Tooth Design: Alternating 5 TPI geometry cuts faster and cleaner in wood, metal, and plastic.
  • Triangle Slot Design: Specialized side slots allow for easy plug ejection and efficient heat reduction.
  • Reinforced Shoulder: Provides structural stability and prevents stress failure during heavy-duty use.
  • Deep Cup Capacity: 1-3/4 inch cutting depth easily accommodates 2x lumber and thick composite materials.
  • Multi-Material Versatility: Optimized for cutting wood, drywall, plastic, metal, and stainless steel.
  • Universal Compatibility: Compatible with standard large-diameter mandrels and quick-change systems (sold separately).

What's Included

(1) 4-1/2 Inch Bi-Metal Hole Saw (Arbor/Mandrel Sold Separately)

Specifications

Manufacturer Bosch
Model Number HBT450
Saw Diameter 4-1/2 in.
Max Cutting Depth 1-3/4 in.
Teeth Per Inch (TPI) 5
Blade Material Bi-Metal M42 (8% Cobalt)
Tooth Design Progressor
Arbor Included No (Requires Large Mandrel)
Applications Drywall, Metal, Plastic, Wood
Product Weight 1.18 lbs
Package Quantity 1

Pro-Tip: Safety is key when using large diameter hole saws like this 4-1/2 inch model. The rotational force can be significant when the saw engages the material. Always use a drill equipped with a side handle to maintain a secure grip and prevent wrist injury from "kickback."