Weber Genesis Sear Knob. Light Gray. 2″ diameter. Used with Sear Burner part 62753 Fits the following models- 6531001 Genesis 330 LP Grill, 6531301 Genesis 330 LP Grill, 6531701 Genesis 330 LP Grill, 6631001 Genesis 330 NG Grill, 6631301 Genesis 330 NG Grill, 6570001 Genesis S-330, Stainless, LP Gas Grill, 6670001 Genesis S-330, Stainless, NG Gas Grill, 86631301 (2013)(NG) Genesis EP-330 Grill – Black, 86670001 (2013)(NG) Genesis S-330 Grill – SS, 86570001 (2013)(LP) Genesis S-330 Grill – SS