Studio view of the white Bosch HBT125 bi-metal hole saw featuring red logo text and triangular side slots.
Infographic displaying the hole saw features including triangle slot design, enhanced M42 alloy, progressor tooth design, reinforced shoulders, and a deeper cup.
Overhead action shot of a cordless drill with the hole saw cutting a hole into a beige wooden door panel.
Studio view of the white Bosch HBT125 bi-metal hole saw featuring red logo text and triangular side slots.
A worker uses a Bosch drill and the hole saw to cut through the side of a grey metal electrical panel box.
A contractor uses a cordless drill and hole saw to cut a hole in a white countertop surface over a sink template.
Hands wearing protective gloves attaching the white hole saw cup to a drill arbor.
Macro view of the hole saw's cutting edge highlighting the sharp, alternating progressor tooth geometry.
Overhead action shot of a cordless drill with the hole saw cutting a hole into a beige wooden door panel.
Studio view of the white Bosch HBT125 bi-metal hole saw featuring red logo text and triangular side slots.
Infographic displaying the hole saw features including triangle slot design, enhanced M42 alloy, progressor tooth design, reinforced shoulders, and a deeper cup.
Overhead action shot of a cordless drill with the hole saw cutting a hole into a beige wooden door panel.
Studio view of the white Bosch HBT125 bi-metal hole saw featuring red logo text and triangular side slots.
A worker uses a Bosch drill and the hole saw to cut through the side of a grey metal electrical panel box.
A contractor uses a cordless drill and hole saw to cut a hole in a white countertop surface over a sink template.
Hands wearing protective gloves attaching the white hole saw cup to a drill arbor.
Macro view of the hole saw's cutting edge highlighting the sharp, alternating progressor tooth geometry.
Overhead action shot of a cordless drill with the hole saw cutting a hole into a beige wooden door panel.
BOSCH

Bosch HBT125 1-1/4 Inch Bi-Metal Hole Saw M42 Cobalt Alloy 1-3/4 Inch Deep Cut for Wood Metal and Drywall

Only 2 left
SKU: HBT125
$4.99 USD

Description

Bosch Promtional Logo Logout

UNBEATABLE DURABILITY WITH M42 COBALT TECHNOLOGY

Drill faster and longer with the Bosch HBT125 1-1/4 Inch Bi-Metal Hole Saw. Designed for the serious professional, this high-performance accessory is crafted from enhanced M42 alloy containing 8% cobalt. This superior composition allows the saw to withstand high-temperature applications, delivering clean cuts and up to 20% more life compared to standard bi-metal hole saws. Whether you are boring through tough metal, wood, plastic, or drywall, the reinforced shoulders provide the added strength needed for heavy-duty use.

The HBT125 is engineered for efficiency with its unique "Triangle Slot" design, which not only reduces heat build-up but also makes plug removal faster and easier than ever. Coupled with the innovative Progressor tooth design—featuring alternating tooth sizes—this hole saw cuts aggressively yet cleanly across a variety of materials. With a deep 1-3/4 inch cup, you can easily tackle thicker materials and multi-layered substrates without needing to stop and clear debris constantly.

Key Features

  • Enhanced M42 Alloy: Infused with 8% cobalt to resist high heat and extend blade life by 20%.
  • Triangle Slot Design: Specialized side slots allow for rapid plug ejection and efficient heat dissipation.
  • Progressor Tooth Geometry: Alternating tooth sizes ensure faster cutting speeds and cleaner holes.
  • Deep Cut Capacity: A 1-3/4 inch cutting depth easily handles 2x lumber and other thick materials.
  • Reinforced Shoulders: Added structural strength prevents ovaling and failure during high-torque applications.
  • Multi-Material Versatility: Optimized for drilling into wood, metal, plastic, and drywall.

What's Included

(1) 1-1/4 Inch Bi-Metal Hole Saw (Arbor and Pilot Bit Sold Separately)

Specifications

Manufacturer Bosch
Model Number HBT125
Saw Diameter 1-1/4 in.
Max Cutting Depth 1-3/4 in.
Teeth Per Inch (TPI) 5 (Variable Progressor)
Body Material Bi-Metal M42 (8% Cobalt)
Arbor Included No (Sold Separately)
Application Drywall, Metal, Plastic, Wood
Product Weight 0.27 lbs
Product Type Hole Saw Cup

Pro-Tip: When drilling into metal, always use a slow RPM and apply cutting oil to the hole saw teeth. This simple step significantly reduces heat friction, preserves the cobalt alloy teeth, and ensures a cleaner cut without work-hardening the metal.