JW Winco Phenolic Plastic Hand Knob with Steel Tapped Insert， Threaded Hole， 3/8"-16 Thread Size x 1-3/16" Thread Depth， 3-5/32" 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/31cYLH-5r%2BL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31jiNYp2W1L.jpg' noproxy></br>