GWIS/GWI Series Pistol Grip Square Drive Pneumatic Oil Pulse Wrench | Auto Shut-Off & Non Shut-Off Industrial Torque Tool
This series of pistol-grip square-drive pneumatic oil pulse wrenches deliver smooth, precise torque output via the oil pulse principle. Available in "auto shut-off" and "non shut-off" versions to match different working requirements, the full line covers a torque range of 6 to 148 kgf·cm, with 3/8" and 1/2" standard square drives compatible with various sockets and fasteners.
Featuring a classic pistol-grip design for intuitive handling and natural force application, the tool boasts a robust, durable structure with economical air consumption and excellent noise control. It is widely used for bolt tightening and removal in automotive manufacturing, machinery assembly, hardware fabrication, equipment maintenance and other industries.
- Product Details
- Technical Specification
- After-sale service
Oil Pulse Torque Technology for Precise & Stable Output
Built on the oil pulse torque principle, it delivers smoother torque output and higher control accuracy than traditional impact wrenches. It effectively prevents over-tightening, thread stripping, bolt breakage and workpiece deformation, ensuring consistent quality in batch assembly, and is ideal for fastening operations with explicit torque accuracy requirements.
Two Operating Modes for Diverse Working Conditions
Two operating modes are available: auto shut-off and non shut-off. The auto shut-off model automatically cuts air supply and stops output when preset torque is reached, ideal for high-precision torque-controlled assembly. The non shut-off model delivers continuous power, suitable for bolt removal and rough tightening. Users can select flexibly based on operation requirements.
Pistol-Grip Ergonomic Design for Efficient & Low-Effort Operation
The classic pistol-grip structure provides a secure, palm-fitting hold with natural, smooth force application, reducing hand fatigue during long continuous operation. The responsive trigger enables precise start-stop control, greatly improving work efficiency and operating comfort for both assembly and disassembly tasks.
Industrial-Grade Robust Structure for Durability & Low Operating Cost
Constructed with industrial-grade high-strength material and reinforced structure, it is impact-resistant, wear-resistant and delivers long service life. Powered by standard pneumatic supply with economical air consumption and excellent noise control, it withstands long continuous operation in workshops and effectively reduces production line O&M costs.
Wide Range & Multiple Specifications for Full-Scenario Coverage
The full series offers multiple torque grades, covering all scenarios from low-torque precision assembly to heavy-duty high-torque fastening. Equipped with 3/8"and 1/2" standard square drives, it works with various sockets and adapter accessories to flexibly meet operational needs across automotive, machinery, hardware and other industries.

This product supports bulk orders and OEM/oDM customized services with factory direct prices.We canprovide customized configurations such as torque range, drive head type, battery capacity, angle functionand appearance according to customer requirements.Adopts high-quality industrial-grade componentsand precision manufacturing processes, with stable quality and guaranteed delivery.We also provide complete operation training, calibration services and long-term technical support services.