Windsurfing tensioner screwdriver.

Lets you haul strong while limiting the risk of hand injury.

The two holes let you insert the line to stop it slipping as you tune the sail, as well as the Phillips-head screwdriver to use as a lever arm when used as a screwdriver.

Enables easy screwing and unscrewing using the 2 cruciform and flat heads at each end.

If the screwdriver you are using does not have enough "grip", you can use winch as a lever arm. Just slide your screwdriver into one of the holes in the bar and use it as a handle to screw or unscrew.