Li-ion Brushless Dual-Purpose Wrench

The BOSI Black Warrior Cool Series Li-ion Brushless Dual-Purpose Wrench, from the Chinese manufacturer BOSI, features a 20V/4.0Ah battery. It utilizes a high-quality brushless motor, offering high performance, high torque, and powerful acceleration.

Its unique dual-purpose four-axis design includes a 1/2-inch square head for socket fitting and bolt/nut assembly; and a 1/4-inch hexagonal shank for holding bits, instantly transforming it into a drill or screwdriver for drilling and screwing.

The no-load speed is 0-2000/2600 r/min, with a maximum torque of 350 N·m. It supports one-button battery level monitoring and features a high-quality tungsten steel shaft with high hardness, strength, and wear resistance.

It also features intelligent self-loosening/torque adjustment for easy and reliable use. It comes standard with two batteries and a charger.

Suitable for various applications including car tire fitting, mechanical bolt tightening, and drilling into wood and plastic.

Product Parameters

Product Advantages

Dual-purpose square shaft design: One machine, two uses. Use the 1/2" square head to drive sockets for bolt and nut assembly/disassembly; use the 1/4" hexagonal shank to hold standard bits for drilling or screwing, eliminating the need for a separate electric drill.

350N·m high torque: sufficient for installing and removing car tire bolts, chassis bolts, and mechanical fasteners, while also meeting the power requirements for drilling.

Brushless motor: No carbon brush wear, long lifespan, high efficiency, and longer battery life with the same capacity.

Dual speed adjustment: low speed 2000r/min high torque suitable for tightening/removing; high speed 2600r/min suitable for fast drilling.

Intelligent self-loosening/torque adjustment: Automatically slows down after loosening the nut to prevent it from flying out; automatically stops tightening when the set torque is reached to protect the threads.

High-quality tungsten steel shaft: High hardness, wear-resistant, and does not deform under long-term high load use, ensuring output accuracy.

Multi-purpose: Tire repair + drilling + screwing, reducing the number of tools required, suitable for carrying in a vehicle or mobile repair.

Why Choose BOSI Li-ion Brushless Dual-Purpose Wrench?

Application Scenarios

Automotive repair: using the 1/2" square head with a socket for installing and removing tire bolts, chassis suspension bolts, and engine mount bolts (350N·m is sufficient for passenger cars and SUVs).

Equipment installation: Tighten equipment anchor bolts and flange bolts. Simultaneously, use a 1/4" hex shank with a bit to tighten self-tapping screws in the electrical control box.

Emergency use in vehicles: One machine can be placed in the trunk for changing tires or emergency drilling (such as installing temporary hooks).

Home repair: Switch to a 1/4" hex shank and install a bit for furniture assembly, appliance repair, and drilling holes in drywall.

Metal/wood drilling: Use a 1/4" hex shank to a three-jaw chuck (adapter required) to hold drill bits for drilling operations.