Studio shot of the black Diablo 2-1/8 inch self-feed bit standing upright with a replacement feed screw next to the hex shank.
Retail packaging for the Diablo 2-1/8 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 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 2-1/8 inch self-feed bit standing upright with a replacement feed screw next to the hex shank.
Retail packaging for the Diablo 2-1/8 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 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 DSF2125 2-1/8 Inch Self-Feed Drill Bit SPEEDemon 2-Cutter Head 7/16 Hex Shank High Speed Steel

Only 3 left
SKU: DSF2125
$47.29

Description

High-Efficiency Rough-In Drilling: Diablo SPEEDemon 2-1/8 Inch Self-Feed Bit

Transform the way you handle rough-in installations with the Diablo DSF2125 2-1/8 in. SPEEDemon™ Self-Feed Bit. Specifically forged for professional electricians and plumbers, this bit is designed to power through clean wood with minimal resistance. The state-of-the-art 2-cutter head design reduces the mechanical load on your drill, resulting in significantly higher energy efficiency. This means you can drill up to 2X more holes per battery charge compared to standard self-feed bits, allowing you to finish large framing projects without constantly swapping out batteries.

Speed and reliability are at the core of the DSF2125's engineering. It features an aggressive low-thread count feed screw that prevents pitch build-up and pulls the bit aggressively through softwoods. To address the common jobsite issue of lost parts, Diablo includes a pull-out stop mechanism that locks the feed screw in place, preventing it from slipping out when withdrawing the bit from the material. With a heavy-duty 7/16-inch hex shank, this bit provides a secure, non-slip grip in 1/2-inch chucks, delivering maximum torque transfer for the most demanding boring tasks.

Key Features

  • Precision Forged: Manufactured using a heat-forging process for strict tolerances, superior strength, and up to 2X longer life.
  • Cordless Performance: Energy-efficient 2-cutter geometry optimizes battery usage for 2X more holes per charge.
  • Non-Stick Feeding: Aggressive low-thread count feed screw minimizes pitch build-up for fast, smooth drilling.
  • Pull-Out Stop: Innovative mechanism prevents the feed screw from slipping out or being lost during bit removal.
  • Clean Boring: Balanced cutting head reduces vibration and produces clean entry and exit holes in softwoods.
  • Secure Shank: 7/16" Hex shank ensures a solid grip in drill chucks, eliminating slippage under high torque.

What's Included

(1) Diablo 2-1/8" SPEEDemon™ Self-Feed Bit (DSF2125)
(1) Replacement Feed Screw
(1) Allen Key

Specifications

Brand Diablo Tools
Model Number DSF2125
Bit Diameter 2-1/8 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 2-1/8" bit is frequently used for installing 1-1/2" diameter pipe couplings or hubs that require slightly more clearance than the pipe itself. Because of the aggressive self-feed screw and large diameter, this bit generates significant torque; always use a high-torque drill with an auxiliary side handle and brace yourself firmly before starting the cut.