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The DeWalt DCK421D2 bundles four 20V MAX cordless tools: a DCD780 1/2-inch drill/driver, a DCF885 1/4-inch impact driver, a DCS393 6-1/2-inch circular saw and a DCL040 LED worklight. Two 2.0Ah batteries and a charger come in the box, so the kit runs out of the case. The drill and impact driver are compact and light, which suits cabinetmakers, framers and homeowners who want one battery platform for several jobs. The trade-off against newer kits is the small 2.0Ah batteries and brushed-era tool designs; the saw is a left-blade sidewinder with a 460 MWO motor. Owners of this generation generally rate the drill and impact driver highly and treat the saw and light as useful extras.
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Owners of this kit generation praise the drill and impact driver as light, strong and reliable for daily trade work. The circular saw draws criticism for runtime on the 2.0Ah packs, and some wish the kit included larger batteries.
The DeWalt DCK421D2 is a cordless 20V MAX lithium-ion combo kit with four tools: a 1/2" compact drill/driver, a 1/4" compact impact driver, a 6-1/2" circular saw and an LED worklight. It comes with two 2.0Ah batteries and a charger.
The drill/driver has a two-speed transmission with ranges of 0 to 600 RPM and 0 to 2,000 RPM. The impact driver has a one-handed loading 1/4" hex chuck that accepts 1" bit tips. The circular saw has a 460 MWO motor that runs at 3,700 RPM.
The worklight has an LED bulb that puts out 110 lumens. Its head rotates 120 degrees. The tools have a compact, ergonomic design.
