DEWALT 20V MAX 1/4 Inch Hydraulic Impact Driver (DCF870B) — Power Tools product photo
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DEWALT 20V MAX 1/4 Inch Hydraulic Impact Driver (DCF870B)

Brand: DEWALT

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The DEWALT 20V MAX 1/4 Inch Hydraulic Impact Driver (DCF870B) delivers quiet, smooth, and powerful fastening through an innovative hydraulic drive mechanism that eliminates the metal-on-metal impact of traditional impact drivers. This brushless cordless tool produces half the noise and significantly less vibration than standard impact drivers while delivering the torque needed to power through any workload. The POWERLOAD technology and hydraulic drive provide up to 3,000 RPM and 3,300 IPM for efficient driving in a wide range of materials. An integrated LED Halo Ring illuminates dark work areas with three-mode functionality for visibility in any condition. XR Extreme Runtime technology pairs with the brushless motor for extended battery life per charge. The 1/4-inch hex chuck accepts standard quick-change bits for fast, tool-free bit swaps. Battery and charger are not included (tool only). Ideal for maintenance, automotive, repair, mechanical, and home DIY applications where quiet operation, smooth driving, and reduced vibration are essential. Brand: DEWALT; Model: DCF870B; Voltage: 20V MAX; Chuck: 1/4 in. Hex; Speed: 0-3,000 RPM; Impacts: 0-3,300 IPM; Power Source: Battery Powered (not included); Color: Black/Yellow. Backed by DEWALT's 3-year limited warranty.

Best Used For

MaintenanceAutomotiveRepairMechanicalHome DIY
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Choosing Power Tools

Corded or cordless — how do I choose a power tool?

Cordless tools offer mobility and are best when you move between locations or work without nearby power. Corded tools deliver sustained power without battery swaps and suit fixed-bench or high-runtime work. If you go cordless, standardizing on one battery platform keeps batteries and chargers interchangeable across your tools.

What should I check before buying a cordless power tool?

Confirm the battery platform matches tools you already own, then consider the motor type, speed or torque range, and chuck or bit interface. Brushless motors generally run cooler and last longer under heavy use. A tool that shares batteries with your existing kit lowers the long-term cost of ownership.