SKU: 29503891112

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

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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

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

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."

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29503891112

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israel
Birmingham, US
★★★★★ 5
Like the description
Size: 30ft, Style: 6C-18AWG
Good
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Reviewed in the United States on February 23, 2026
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Verified Purchase
Vincent B
Chelsea, US
★★★★★ 5
Great
Size: 30ft, Style: 6C-18AWG
Quality six conduit wire, used for my car stereo head unit
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Reviewed in the United States on April 3, 2025
M
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Mike estevez
New York, US
★★★★★ 5
Figment is perfect , performs as it should .
Made my car start up like when it was new
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
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Cynthia
New York, US
★★★★★ 5
Great Starter
Works like a charm
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Reviewed in the United States on March 3, 2026
S
Verified Purchase
Scouter Doug
Lowell, US
★★★★★ 5
I Gambled - Works So Far after 2 Months
I used this as a replacement starter for a 2008 CRV. Quick answer, it works so far and sounds fine. It replaced a fairly newly rebuilt OEM starter - "factory rebuilt in the USA" - so much for them- very dissapoiinting. When I looked for replacement EVERY starter I looked at locally had horrible reviews online with consistency issues - some worked, some didn't. I figured, if that's the case, buy the cheapest one. So far this Boatrip is the real deal - beautifully machined and went in just like the original. I went ahead and took off the intake manifold - it was a huge job for me. I ended up tearing my throttle body gasket and didn't replace it. Now I have a fast idle check engine light. So, I'll need to take that part apart and replace the gasket. I guess it's sucking air and throwing off the idle speed. otherwise, the YouTube videos really helped on the repair. I hope I don't have to do it again. Good luck!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 6, 2025

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