A fully submersible power tool, the Power Shark uses its “resonant wave” 3,000rpm oscillating head to disrupt the bond between materials, dislodging unwanted fouling, including tenacious calcifications—without damaging the underlying work surface. Use it safely on metals, PVC, rubber, conduit, wood, concrete and fiberglass gelcoat. The tool operates for up to 90 minutes on its 12.8V, lithium iron phosphate rechargeable battery pack and is depth-rated to 20 feet. Kit includes Power Shark tool with 4.5", 3" and 1" stainless steel blades, battery pack with 4'3" power cord and charging adapter that accepts 100-240V AC, 50-60Hz input. One year warranty.