Milwaukee 48-25-2122 Self Feed Bit 2-1/8 Inches

Product Description

The MILWAUKEE ELECTRIC TOOL CORP 48-25-2122 is a 2-1/8-inch self feed bit engineered for fast, aggressive boring through dimensional lumber, engineered wood, and similar framing materials. Self feed bits use a center screw to pull the bit into the workpiece, reducing the feed force required from the operator and enabling cleaner entry holes with consistent diameter. This bit includes 2 feed screws in the package, allowing field replacement of worn feed screws without retiring the full bit. It is a standard addition to the tool kit of electricians, plumbers, and HVAC installers who bore large-diameter holes through structural members during rough-in work.

The 48-25-2122 is suited for residential and light commercial rough-in applications where large-diameter through-holes are required in wood framing. Typical use cases include boring holes for pipe, conduit, refrigerant line sets, and flex duct runs through top plates, bottom plates, and floor joists. The 2-1/8-inch diameter accommodates common trade piping and conduit sizes that require clearance holes in framing.

Key Features

• 2-1/8-inch cutting diameter for large-bore rough-in holes
• Self-feed center screw pulls the bit through the workpiece, reducing operator effort
• Includes 2 replacement feed screws for extended service life
• Compatible with standard hex-shank and spade-style bit chucks on corded and cordless drills

Compatibility

Designed as a standard self feed bit for use with corded and cordless drills and right-angle drills equipped with an appropriate chuck for self feed bit shanks.

Installation Notes

This bit is installed and used by electricians, plumbers, and HVAC technicians during rough-in framing work. Always confirm the boring location is clear of existing wiring, pipes, and structural fasteners before drilling. Ensure the drill is set to an appropriate low-speed, high-torque setting when boring through dense or doubled lumber. Follow applicable NEC, IPC, or IFGC requirements for minimum clearance distances when boring holes near the edge of structural members.

Technical Specifications

• Cutting Diameter: 2-1/8 inches
• Feed Screws Included: 2
• Weight: 20.19 pounds
• Unit of Measure: EA
• Package Quantity: 24

Standard Information

• Brand: MILWAUKEE ELECTRIC TOOL CORP
• Manufacturer Part Number: 48-25-2122