Deborah B Kendall Park , NJ August 01, 2016 Knobs are made out of plastic broke when you turn the knob Had to buy two more to replace it probably in due time will have to replace others so sad that it is made so cheap. Spend so much for a cooktop and only had it for a year and already had to replace something GE profile 20 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes