Nothing sears a steak like GrillGrate®. This PK300 & Original PK -specific GrillGrate® consists of 3 interlocking panels sits on top of your Original PK, PKTX, PK300 or PKAF cooking grid to create a highly heat-conductive cooking surface. The magic is in the raised rails which rapidly transfer heat upward to cook foods fast and evenly, like an infrared cooker.