The WCD1B78 Cordless Impact Wrench is a high-performance tool built for heavy-duty fastening and loosening tasks. Powered by a 20V brushless motor, it delivers exceptional fastening torque of 780Nm and nut-busting torque up to 950Nm, making it ideal for automotive repair, machinery assembly, and construction work.
Its three-speed control ensures precision for different applications, while the integrated LED work light enhances visibility in dark or confined spaces. The 1/2" square drive ensures compatibility with standard sockets, and the included deep socket set lets you tackle tough bolts effortlessly.
Equipped with two 4.0Ah lithium-ion batteries and a 220–240V fast charger, this cordless wrench guarantees longer runtime, reduced downtime, and ultimate power efficiency for professionals and DIY users alike.

Key Features & Specifications

• Model: WCD1B78

• Motor Type: Brushless

• Voltage: 20V

• Square Drive: 1/2"

• No-Load Speed: 0–1600 / 0–2100 / 0–2400 rpm

• Impact Rate: 0–1500 / 0–1800 / 0–2200 bpm

• Fastening Torque: 780Nm

• Nut-Busting Torque: 950Nm

• Lighting: Integrated LED work light

• Accessories Included:

  • 3 Pcs deep sockets (22, 24mm)

  • 1 Pcs belt clip

  • 2 Pcs 4.0Ah battery pack (WLBP540)

  • 1 Pcs charger (WFCP518)

• Charging Voltage: 220–240V~50/60Hz

• Application: Automotive, construction, and heavy equipment maintenance

• Packaging: Packed by set