This item DID NOT work on my large glass oval RIVAL CROCKPOT! But I have GOOD NEWS for RIVAL CROCKPOT owners!! When I called RIVAL Customer Service to try and order an entire new lid for my trusted old white RIVAL CROCKPOT......their Customer Service Angel of a Person to told me that since ONLY the plastic knob broke and NOT the glass lid; RIVAL considered the broken knob to be DEFECTIVE and sent me A BRAND NEW OVAL GLASS RIVAL CROCKPOT LID for FREE!! That's right FREE!!👍 ❤️ I hope this information can help the honest customers of RIVAL and AMAZON. As for why I gave this item 3 STARS... after reading all the good reviews, I checked my cookware and determined this would be a good item to keep on hand, as I have so many lids!! Happy New Year 🎊 🎈 Everybody !!