JW Winco Glass Filled Nylon Plastic Tapped Star Knob with Steel Hub, Threaded Hole, 1/2"-13 Thread Size x 7/8" Thread Depth, 2-31/64" Head Diameter (Pack of 1)
</br></br>

</br></br></br></br></br></br></br></br></br></br>

</br></br></br></br></br></br></br></br></br></br>
<img src='http://ecx.images-amazon.com/images/I/31sS8ji7Y0L.jpg'></br>