The Stanley IW12 is a medium-duty 3/4" square drive hydraulic impact wrench designed for underwater bolting and drilling applications. Powered by a Stanley integral Hyrevz motor, the IW12 features a durable swing hammer impact mechanism with adjustable impact intensity from 340 to 1632 Nm of torque. Designed to operate from a wide range of hydraulic circuits, the IW12 provides reliable performance for demanding underwater bolting applications. The forward-reverse function with variable speed provides greater control, while the oversized trigger with guard ensures comfortable operation. The Stanley IW12 comes complete with flat-face quick-connect couplings, with a robust plastic transport and storage case available as an optional extra.
Technical Specifications
Product Code: SY-IW12
• Weight: 6.4 kg
• Brand: Stanley
• Power Type: Hydraulic
• Capacity: 340–1632 Nm
• Fitting: 3/4" Square Drive
• Hydraulic Flow: 15–45 lpm
• Pressure: 70–140 bar
• Couplings: Yes
• Port Size: -8 SAE O-Ring
• Stainless steel spools and fasteners
• Forward-reverse operation with variable speed
• 1632 Nm maximum impact torque
• Oversized trigger with guard for operator comfort
• Cast-in lifting eye


