Lunarland Fitz-All Stove Top Heat Diffuser 2 Pack -Grids For Use on Electric or Gas Ranges Brand new 2 pack of Fitz-All brand Heat Diffuser Grids, Fitz-All's Heat Diffuser grids are made of heavy gauge metal and are designed to protect glass coffee pots and tea pots on both electric and gas ranges, Instructions:Place one heat diffuser grid under glass coffee pot or glass tea pot to protect them from breakage on electric or gas range burner elements Use low heat setting,Can also be used under metal pots and pans to reduce sticking and burning of food or eliminate scorching of cookware, Each Diffuser Grid measures approx,3 3/4" x 3 3/4" Note:For return policy in non product problem,customer has to response for shipping fee and 15% restore fee,Please return within 14 days after receive.