Pat Z Longmont , CO September 26, 2016 Knobs on jenn air ceramic stovetop where quite old some numbers on them could not be seen and also the plastic was chipping after 23 years Ordered new knobs for the stovetop and was apprehensive whether they would fit or not. Perfect! Am quite pleased that I found them. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes