1" wand tilter, fits almost 1/4" hex rod. Measured with standard metal tape measure. You must match your part exactly to pictures before ordering. Tilter has a clutch to stop over turning. When installing the tip on the hex must be at the top and slats have should not be tilted. If you over turned the tilter before installation, turn stem and push the hex hole until they engage. I use pliers to help install the hook you may also want to bent out the hook a little make it easier to install.