Studio shot of the black Diablo 1-1/8 inch self-feed bit standing upright with a replacement feed screw next to the hex shank.
Retail packaging for the Diablo 1-1/8 inch SPEEDemon self-feed bit, featuring a clear case highlighting the 2-cutter design and size specifications.
Close-up action shot of the self-feed bit boring through a wooden stud, showing the cutter head exiting the material with wood debris.
Action shot of the black Diablo self-feed bit drilling horizontally into a light wood stud, showing the shank connected to a drill chuck.
Studio shot of the black Diablo 1-1/8 inch self-feed bit standing upright with a replacement feed screw next to the hex shank.
Retail packaging for the Diablo 1-1/8 inch SPEEDemon self-feed bit, featuring a clear case highlighting the 2-cutter design and size specifications.
Close-up action shot of the self-feed bit boring through a wooden stud, showing the cutter head exiting the material with wood debris.
Action shot of the black Diablo self-feed bit drilling horizontally into a light wood stud, showing the shank connected to a drill chuck.
DIABLO

Diablo DSF1125 1-1/8 Inch Self-Feed Drill Bit SPEEDemon 2-Cutter Head 7/16 Hex Shank High Speed Steel

Only 2 left
SKU: DSF1125
$16.95 USD

Description

Double Your Drilling Efficiency: Diablo SPEEDemon 1-1/8 Inch Self-Feed Bit

Experience a new standard in rough-in drilling with the Diablo DSF1125 1-1/8 in. SPEEDemon™ Self-Feed Bit. Designed for the high demands of professional electricians and plumbers, this bit utilizes a precision heat-forging process to deliver strict tolerances and unmatched durability. The innovative 2-cutter head design is engineered for maximum energy efficiency, allowing you to drill up to 2X more holes per battery charge compared to standard bits. Whether you are running supply lines or small conduits through softwoods, this bit provides the speed and consistency needed to keep your projects moving forward.

The bit features an aggressive low-thread count feed screw that practically pulls itself through the wood, reducing user fatigue and preventing pitch build-up that can slow you down. A common jobsite headache is solved with Diablo's unique pull-out stop mechanism, which secures the feed screw in place so it won't slip out or get lost when withdrawing the bit from deep holes. With a heavy-duty 7/16-inch hex shank, the DSF1125 locks firmly into 1/2-inch drill chucks, ensuring high torque transfer without slippage.

Key Features

  • Precision Forged: Heat-forged from premium steel for consistent quality and up to 2X longer lifespan.
  • Battery Efficient: Optimized 2-cutter design extends cordless runtime, delivering 2X more holes per charge.
  • Fast Feeding: Low thread count feed screw resists pitch build-up for rapid, effortless drilling.
  • Secure Screw Design: Pull-out stop prevents the feed screw from slipping out during bit removal.
  • Smooth Operation: Balanced cutting head reduces vibration and provides clean entry and exit holes.
  • Secure Grip: 7/16" Hex shank prevents chuck slippage in high-torque applications.

What's Included

(1) Diablo 1-1/8" SPEEDemon™ Self-Feed Bit (DSF1125)
(1) Replacement Feed Screw
(1) Allen Key

Specifications

Brand Diablo Tools
Model Number DSF1125
Bit Diameter 1-1/8 in
Overall Length 5-1/8 in
Shank Diameter 7/16 in Hex
Material Application Soft Wood, Clean Wood
Bit Material High Speed Steel (Forged)
Chuck Requirement 1/2 in Drill Chuck
Feed Type Self-Feed Screw
Pack Quantity 1

Pro-Tip: The 1-1/8" diameter is a versatile size, perfect for running 1/2" and 3/4" copper or PEX water supply lines through studs. When drilling overhead or in tight spaces, ensure your drill is in low gear to maintain torque and control, allowing the self-feed screw to do the heavy lifting for you.