The AllPoints Foodservice Parts & Supplies 8402378 Calibration Ring is designed for optimal performance in electric and gas griddles. With an outer diameter of 5 inches and an inner diameter of 3-3/8 inches, this steel calibration ring is 1/32 inch thick and features a durable gray finish. It is compatible with Hobart models HOG-643810-1SS and CG77, and serves as a reliable replacement for FMP part number 128-1029. Enhance the efficiency and accuracy of your griddle with this essential accessory.