Switchblade Selfeed Bit 1-1/2" - 48-25-5125

Milwaukee 48-25-5125 — SWITCHBLADE™ Selfeed Bit (1-1/2")

The Milwaukee 48-25-5125 SWITCHBLADE™ Selfeed Bit is a wood boring drill bit designed for fast, repetitive hole cutting, typically used in framing, rough-in electrical, and plumbing work where large diameter holes are needed.

Unlike standard auger bits, this is a self-feeding bit, meaning it pulls itself through the wood using an aggressive feed screw, reducing the amount of pressure you need to apply.

Key Features

• 1-1/2" cutting diameter for large utility holes
• SwitchBlade™ replaceable cutting system (you replace blades instead of sharpening the whole bit)
• Aggressive self-feed screw pulls the bit through wood faster
• Designed for repetitive drilling in wood framing materials
• Hardened steel blade system for longer life and durability
• Hex shank (commonly 7/16") for secure drill/impact compatibility

What it’s used for

• Drilling large holes for plumbing pipes
• Running electrical conduit or wiring bundles
• HVAC and mechanical rough-ins
• General framing work requiring fast, repeatable boring

Why trades use it

The main advantage is speed and efficiency:

• Faster than standard spade bits or augers in heavy wood
• Replaceable blade system means less downtime vs resharpening
• Designed for production drilling, not precision work