Morton 6061 Aluminum Round Domed Knob, Knurled Rim, Threaded Hole, 5/16"-18 Thread Size x 1/2" Thread Length, 2" 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/41b6bvbuQ8L.jpg'></br>