Bosch HTW118 1-1/8 Inch Edge Impact Tough Bi-Metal Hole Saw 8 TPI Sheet Metal Core Drill Bit with 1/4 Hex Shank and Depth Stop Power Tool Accessory

High-Torque Sheet Metal Cutting – Premium One-Piece Impact-Rated Core Drill Bit with Automatic Plug Ejection

Engineered to handle the violent rotational forces of modern high-output cordless impact drivers, the Bosch HTW118 1-1/8 Inch Edge™ Impact Tough™ Bi-Metal Hole Saw delivers outstanding commercial-grade durability. Designed specifically for professional HVAC technicians, residential electricians, automotive fabricators, and metal workers, this innovative accessory provides up to 2X the tool life over standard impact-rated hole saws. The specialized 8-TPI (teeth per inch) bi-metal profile is precision-ground to slice rapidly through thin sheet metal, electrical junction boxes, ductwork, and steel plates, providing lightning-fast, burr-free cuts without binding, chattering, or stripping the cutting edge under intense operational pressure.

This heavy-duty metal core bit is engineered with an advanced one-piece integrated construction, which means there are absolutely no loose arbors or separate pilot bits to assemble before getting to work. Equipped with a permanent solid shoulder depth stop, it protects your workspace by preventing accidental tool breakthrough—making it the ideal choice for drilling safely near internal electrical wiring, hidden plumbing pipes, or sensitive mechanical components. Featuring a universally compatible 1/4-inch hex shank that locks instantly into all quick-release impactors and traditional drill chucks, this premium sheet metal saw includes a heavy-duty pilot bit spring that delivers automatic, hassle-free metal plug ejection on every single cut.

Key Features

• Edge Impact Tough Endurance: Advanced heat-treated bi-metal architecture yields up to 2X the service life over standard competitive impact hole saws.
• Optimized 8-TPI Bi-Metal Profile: Fine-pitched teeth are engineered to make swift, incredibly clean cuts in sheet metal while resisting tooth fracture.
• Integrated Solid Depth Stop: Built-in safety collar prevents aggressive tool over-travel and destructive breakthroughs, safeguarding underlying components.
• Automatic Plug Ejection Spring: Heavy-duty compression spring wraps the pilot bit to automatically pop out hot metal discs instantly after completing the cut.
• Universal 1/4-Inch Hex Shank: Form-fitted base guarantees a non-slip grip in high-torque impactors, standard cordless drills, and right-angle drivers.
• Convenient One-Piece Architecture: Eliminates separate mandrels, arbors, and pilot drill installations to streamline your workflow on the jobsite.

What's Included

• 1 × Bosch 1-1/8 Inch Edge™ Impact Tough™ Bi-Metal Sheet Metal Hole Saw with Integrated Shank & Pilot Bit (HTW118)

Specifications

💡 PRO-TIP: High-torque impact driver concussive blows generate significant metal-on-metal heat instantly. When drilling through structural cold-rolled sheet metal or steel framing studs, apply a quick squirt of dedicated cutting oil or generic lubricating spray directly to the bi-metal 8-TPI teeth to keep the temperature down and maximize the lifespans of your premium Edge blades!