The Milwaukee 2448-20 M12 Cable Stapler is a cordless cable stapler built for electricians and low-voltage installers who want to move faster during rough-in work. This is a cable stapler designed for fastening NM-B sheathed cable and low voltage cable inside framed walls and other tight spaces. Model Number 2448-20. If you already run M12 batteries, this bare tool gives you a compact way to replace a lot of hammer-and-staple work with a more controlled fastening process.

What matters here is not just that it drives staples, but that it does it in a way that keeps the job moving. Milwaukee states it can complete rough-ins up to 2x faster than using a hammer, and the coil-spring mechanism is there for a reason: it consistently sinks staples to the appropriate depth. That helps reduce rework, keeps fastening more uniform, and makes the tool easier to trust when you're moving from bay to bay all day.

The compact form factor is a real selling point on this tool. At 6.5 inches long, 2.65 inches wide, 11.6 inches high, and 4.6 pounds, the Milwaukee 2448-20 M12 Cable Stapler is built to get into tight stud bays where larger fastening tools would be clumsy. The barrel-grip layout also makes overhead fastening and difficult reach positions less awkward, which is exactly where manual stapling usually gets old in a hurry.

Milwaukee also added a few practical touches that matter on the job instead of just sounding good on a spec sheet. Moveable cable guides help line up the staple where you want it, a staple viewing window makes it easier to keep track of what is loaded, and the dry fire lockout helps prevent empty-trigger cycles once the magazine is out. Add in the two-finger trigger, LED work light, reversible belt hook, and battery fuel gauge, and this feels like a tool designed by people who know how rough-in work actually goes.

Magazine capacity is 45 staples, and Milwaukee rates the tool for up to 1,200 staples per charged M12 CP2.0 battery. That kind of runtime makes it practical for punch-list work and full rough-in stretches without constant battery swaps. Since this is part of the M12 system and fits all M12 batteries, it drops right into an existing Milwaukee cordless setup without forcing you onto another battery platform.

There is one important compatibility note: this stapler is only compatible with Milwaukee 1 inch insulated cable staples, sold separately. That is not a downside if you want a controlled, purpose-built fastening setup, but it is worth knowing up front so you order the right consumables with the tool.

Who should buy it? If you are an electrician, low-voltage contractor, remodeler, or serious DIYer doing a lot of cable fastening in framing, this tool makes a strong case. It is especially useful for repetitive rough-in work where speed, one-handed positioning, and staple depth consistency matter more than brute force. If you only staple cable once in a while, a hammer may still get it done. If you do it regularly, the Milwaukee 2448-20 M12 Cable Stapler saves time the old-fashioned way: by cutting out extra motions on every single staple.

Milwaukee 2448-20 M12 Cable Stapler is a real time-saver for electricians

If you staple cable regularly, this is one of those tools that earns its spot fast because it cuts down repetitive hammer work and makes fastening in tight framing a lot less annoying.

• Who it's for: Electricians, low-voltage installers, remodelers, and anyone doing frequent cable fastening in framed walls.
• Why it stands out: Compact size, consistent staple depth, M12 battery compatibility, and jobsite-friendly details like the viewing window, cable guides, and dry fire lockout.
• Worth knowing: This is a bare tool, and it only works with Milwaukee 1 inch insulated cable staples, so plan on adding staples and an M12 battery if you do not already own them.

• What kind of cable is this stapler designed to fasten? It is designed for NM-B sheathed cable in 14, 12, and 10 AWG sizes, plus low voltage cable.
• Does it work with all M12 batteries? Yes. Milwaukee states it fits all M12 batteries.
• What staples does it use? It is only compatible with Milwaukee 1 inch insulated cable staples.
• How many staples can it fire on a charge? Milwaukee rates it for up to 1,200 staples on a charged M12 CP2.0 battery.