Feature Application-- Compatible with Yamaha 4-Strokes 150 to 350 HP (Serial Number 0406 ),F150-F350, 2.6L and 3.3L HPDI 2006 to Current Function--Used to grip and remove the plastic fuel water separator cup from Outboard Motors on Yamaha and replace the old fuel filter without damage. High Quality Material--Made of high hardened 4140 impact grade steel,with black oxide coating which is rust-resistance and durable to use.Better than OEM. Nice Design--Slotted and Teeth design for quick access to filter cup without having to feed sensor wiring through the wrench. Applied with 1/2 inch drive. .