PROFESSIONAL GRADE:Our 30 inch diameter round glass is constructed of premium quality fully inspected tempered glass that is designed to be resistant and durable. SAFE SIMPLE INSTALLATION:Glass table top protector features tempered glass for exceptional strength while edges are fully polished for safe handling. Six clear anti-slip rubber bumpers are included to keep securely in place once installed. MULTIPLE THICKNESSES AND SIZES:Available in ¼” thick glass (ideal for covering an existing table) and 3/8” thick glass (ideal for use as a DIY standalone or replacement table top). Wide range of size ensure a for your table including common sizes such as 20 inch 24 inch 30 inch 36 inch and 42 inch. CLASSIC DESIGN:round / circle is surrounded by a sophisticated pencil polished edge. A versatile design this is an ideal table top for your dining room table coffee table or end table.