The Stanley IW16350 Underwater Hydraulic Impact Wrench is a premium professional-grade tool designed to tackle the toughest fastening and loosening tasks in underwater and marine environments. Built around a robust 1″ square drive, this hydraulic wrench delivers powerful, adjustable impact intensity ranging from 500 to 2500 ft-lbs (680 to 3400 Nm), making it ideal for commercial divers and heavy-duty bolting applications such as anchor bolt driving and underwater construction. 

Featuring Stanley’s integral Hyrevz high-torque motor and a durable swing-hammer impact mechanism, the IW16350 offers reliable performance and serviceability even in extended use. Its ergonomic D-style handle with a feathering on/off trigger and multi-position assist grip provide excellent control and comfort, especially when operated with gloves. A standard reversing valve allows for quick and effortless direction changes, while the adjustable impact setting enables precise torque control suited to a wide range of applications. 

With optimized hydraulic requirements (flow range 7–12 GPM, working pressure 1500–2000 PSI) and a rugged, compact build weighing approximately 26 lbs (12 kg), the IW16350 balances power and mobility for underwater tool operations. Its high-visibility finish and robust construction ensure durability in demanding job sites and extreme conditions.