FEATURES NON-STICK - Before you cook on them, take some high temperature oil such as Peanut or Grape Seed, soak a paper towel and rub oil on the grates, and let the oil burn off first. The food does not stick to the grates. SAFETY - Free of Sharp Edges, The end of the rods with a round design that don't hurt your hands. BUILT TO LAST - Made up of solid rods of stainless, not hollow tubes like its competitors. Much longer life than porcelain grill grates, easy to clean and leave beautiful grill marks on the food; No need to replace your parts again and again. SPECIFICATION MATERIAL - Solid rod stainless steel DIMENSION - 19.2” x 7.8” for small grate, 19.2” x 11.8” for two large grates, 19.2” x 31.4 for total. 0.28” (7mm) in Diameter PACKAGE INCLUDED - 3 x stainless steel grill grid grates COMPATIBILITY ? Fits Weber Summit 600 series, Summit E-640, S-640, E-650, S-650, E-660, S-660, E-670, S-670 gas grills. ? Fits Weber Models: 1770501, 7360001, 1880001, 1780001, 7460001, 7370001, 7470001, 7371001, 7471001, 2780301, 2780001. PLEASE NOTE ? Clean the grill after use and keep it dry to extend the service life. ? Aftermarket replacement, not Weber original parts, please check the DIMENSION and MODEL of your original parts before you order. MAINTENANCE TIPS ? Make sure that you scrape your grates after each use; ? Season them by brushing with oil after each use; ? Leave the dampers open a bit so that condensation does not collect in the grill; ? Put the lid back on your grill when it is not in use; ? Cover the grill when it is not in use; ? If not use for a long period of time, heavily coat them in cooking oil, wrap them in a plastic bag.