1Pc Gas Burner Grate Gas Ring Reducer Stainless Steel Burner Cover. - Material: Tempered glass. 10 Pcs Pencil Case Clear for Exams Presentation Boxes School Holder. 9H Hardness, resistant, 99. Hydrophobic and Oleo- coating protect against sweat and reduce fingerprints.99% Clarity, and Maintains the Original Touch Experience.Made from the tempered-glass for maximum protection and easy installation.