Studio shot of the black Diablo 2-1/4 inch self-feed bit standing upright with a replacement feed screw next to the hex shank.
Retail packaging for the Diablo 2-1/4 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 engaging 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 2-1/4 inch self-feed bit standing upright with a replacement feed screw next to the hex shank.
Retail packaging for the Diablo 2-1/4 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 engaging 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 DSF2250 2-1/4 Inch Self-Feed Drill Bit SPEEDemon 2-Cutter Head 7/16 Hex Shank High Speed Steel

Only 2 left
SKU: DSF2250
$28.49

Description

Superior Cordless Efficiency: Diablo SPEEDemon 2-1/4 Inch Self-Feed Bit

Streamline your rough-in applications with the Diablo DSF2250 2-1/4 in. SPEEDemon™ Self-Feed Bit, a tool engineered to maximize the potential of your cordless drills. Manufactured using a precision heat-forging process, this bit offers superior strength and strict tolerances compared to traditional casting methods. Its innovative 2-cutter head design reduces the mechanical resistance during drilling, resulting in a smoother cut that demands less power. This energy-efficient geometry allows you to drill up to 2X more holes per battery charge, ensuring you spend more time working and less time swapping batteries.

Built for speed and reliability, the DSF2250 features an aggressive low-thread count feed screw that pulls the bit through softwoods with minimal effort while resisting pitch build-up. Diablo has also integrated a smart pull-out stop mechanism to prevent the feed screw from slipping out or getting lost when you withdraw the bit from the material. With a heavy-duty 7/16-inch hex shank, this bit locks securely into 1/2-inch chucks, providing the slip-free torque transfer necessary for drilling large diameter holes in clean wood.

Key Features

  • Forged Construction: Heat-forged from premium steel for consistent quality, durability, and up to 2X longer life.
  • Battery Optimization: Energy-efficient 2-cutter design delivers up to 2X more holes per battery charge.
  • Fast Feeding: Aggressive low-thread count feed screw resists pitch build-up for rapid drilling.
  • Secure Screw System: Pull-out stop mechanism prevents the feed screw from slipping out during bit removal.
  • Smooth Cutting: Balanced head geometry reduces vibration and effort in softwoods.
  • Solid Grip: 7/16" Hex shank prevents chuck slippage in high-torque applications.

What's Included

(1) Diablo 2-1/4" SPEEDemon™ Self-Feed Bit (DSF2250)
(1) Replacement Feed Screw
(1) Allen Key

Specifications

Brand Diablo Tools
Model Number DSF2250
Bit Diameter 2-1/4 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 2-1/4" diameter is a perfect fit for running 2" Copper pipe (2.125" OD) or 1-1/2" PVC conduit (1.9" OD). Due to the large surface area being cut, this bit generates significant torque. Always use a drill with an auxiliary side handle and brace it against a stud or your leg to prevent wrist injury if the bit binds.