[Dimensions] 12Inch round glass lid---- please checl installation steps in our pic. 9 [Be Appropriate for] fits most 12'' Cast Iron Skillets, Deep Skillets, such as Lodge's L10SK3.It offers an ergonomic design and easy-hold handle for maneuverability around the kitchen. [Sturdy Tempered Glass & Stainless Steel Reinforced Rim] Tempered glass can withstand drastic temperature changes and won't shatter under pressure, heat resistance up to 390℉,stainless steel rim reinforced the glass is safer , more durable , break and shatter resistant than regular glass . [Steam Vent Hole ] FOLI Square tempered glass lid is updated with steam vent hole to prevent liquid from boiling over, allows you to keep an eye on your cooking. [Assemble Steps] The lid and knob comes as unassembled, please find our video to check the detailed assemble steps. [Dishwasher Safe] FOLI square glass lid is easy to clean, can be cleaned by hand or the dishwasher. [What's in the Box] 1pack 12'' round glass lid with a round bakelite knob. [Be Appropriate for] fits most 12'' Cast Iron Skillets, Deep Skillets, such as Lodg's L10SK3.It offers an ergonomic design and easy-hold handle for maneuverability around the kitchen.