Milwaukee 48-25-5120 Self-feed Bit 1-3/8 in Diameter

Product Description

The Milwaukee 48-25-5120 is a self-feed bit designed for drilling large holes in wood quickly and efficiently. With an overall length of 5 inches and a cutting diameter of 1-3/8 inches, this bit fits into drills via a 7/16-inch shank. The aggressive feed screw pulls the bit through material rapidly, reducing cycle time on repetitive cuts. Rather than resharpening the cutting edge, the replaceable hardened steel blade design lets the technician swap in a new blade and restore full cutting performance without replacing the entire tool body. Electricians, plumbers, and HVAC installers who drill large volumes of holes through framing and plates will find this format practical on production work.

This self-feed bit suits applications that require consistent, clean-entry large-diameter holes through dimensional lumber, engineered wood, and wall plates. The 1-3/8-inch diameter is a common size for plumbing rough-in, low-voltage wire routing, and HVAC penetrations through wood framing. The 7/16-inch hex shank is compatible with standard drill chucks and impact-rated chuck adapters commonly used on the job site. The replaceable blade system is suited for any trade that performs high-volume drilling where downtime for resharpening is not practical.

Key Features

• Replaceable hardened steel blade eliminates the need for resharpening
• 1-3/8-inch cutting diameter suits common rough-in and wire-routing applications
• 7/16-inch hex shank fits standard drill chucks and hex chuck adapters
• Aggressive feed screw design pulls bit through material for faster drilling
• 5-inch overall length provides reach through standard framing members

Compatibility

Designed as an OEM-style self-feed bit for use in standard corded and cordless drills accepting a 7/16-inch hex shank or compatible chuck adapter.

Installation Notes

Self-feed bits should be installed by a qualified tradesperson familiar with rotary drilling tools and applicable safety practices. Secure the workpiece before drilling and ensure the drill chuck or adapter is fully tightened before operation. Inspect the replaceable blade for wear or damage before each use and replace it when cutting performance degrades. Do not use this bit with a rotary hammer in hammer mode.

Technical Specifications

• Cutting Diameter: 1-3/8 inches
• Overall Length (OAL): 5 inches
• Shank Size: 7/16 inches
• Blade Material: Hardened steel
• Bit Type: Self-feed, replaceable blade

Standard Information

• Brand: Milwaukee
• Manufacturer Part Number: 48-25-5120