Wolverine recognizes the particular challenges of sawing concrete in underwater situations, Wolverine has developed a specific saw for those applications. With Wolverine?s underwater hydraulic handsaw, the saw housing is designed to disperse water to lessen blade drag when cutting underwater. All hydraulic fittings and fasteners are stainless steel to minimize corrosion in fresh or salt water. This saw is available in 16?, 20? and 24? sizes and with 8, 10, 12, or 15 gpm motors.