Which is better for drilling holes in masonry?

The DCK2050M2. Its DCD805 has a hammer mode; the DCF845P1 is an impact driver only and cannot drill masonry.

Is the DCF845P1 worth it if I already have a drill?

Yes, if you drive a lot of large screws. It gives 1,825 in-lb, 3,400 rpm and a 5.0Ah battery for $136.99 at eBay as of November 3, 2026, and adds a 3-year warranty.

Which has more torque?

They tie on paper at 1,825 in-lb. The DCF845P1 spins faster at 3,400 rpm versus 3,250 rpm for the ATOMIC driver in the kit.

Which kit gives more total battery capacity?

The DCK2050M2: two 4.0Ah batteries, 8.0Ah total, against one 5.0Ah battery in the DCF845P1 kit.

Which lasts longer under heavy use?

Both use brushless motors. The DCF845P1 carries a stated 3-year limited warranty; the combo listing states no written warranty, so check DEWALT's coverage for the kit.

Why is the combo so much more expensive?

You pay for a second tool and a second battery. At $255.00 versus $136.99 at eBay as of November 3, 2026, the gap buys the hammer drill and an extra 4.0Ah pack.

DEWALT 20V MAX XR Hammer Drill and ATOMIC Impact Driver 2 Tool Cordless Combo Kit with (2) 4.0Ah Batteries, Charger, and Bag DCK2050M2 vs DeWalt 20V MAX XR Brushless 1/4 in. Impact Driver Kit (DCF845P1)

Buy the DEWALT DCK2050M2 combo if you need to drill holes as well as drive screws. It pairs the DCD805 hammer drill with the compact ATOMIC DCF850 driver and two 4.0Ah batteries for $255.00 at eBay as of November 3, 2026. Buy the DCF845P1 if driving fasteners is the whole job: it is a single driver with more torque and speed, a bigger 5.0Ah battery and a 3-year warranty for $136.99 at eBay as of November 3, 2026.

Today the DeWalt 20V MAX XR Brushless 1/4 in. Impact Driver Kit (DCF845P1) costs $118.01 less at its best price.

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