Specification Brand : SagaSave BulletPoint1 : 【Anti-Slip Design】Made of cork, the cork material itself has good anti-slip performance, it has a rough surface texture that provides better friction and effectively prevents the flask from sliding during operation. This non-slip design ensures the stability and safety of the experiment. BulletPoint2 : 【Protection of Flask】This round-bottomed flask mat can be used underneath the flask when the flask is heated up and moved to the table, effectively preventing the table from cracking or deforming due to the high temperature and overheating at the bottom of the flask; of course, this mat can also serve as a fixation to prevent the flask from rolling. BulletPoint3 : 【Thermal Insulation】 Cork as a natural thermal insulation material makes this flat bottomed cork flask holder with good thermal insulation properties. You can place this coaster between the tabletop and the flask. The cork flask rest slows down the transferof heat so that the liquid in the flask is heated more evenly, and also prevents the tabletop from warping due to overheating of the object placed on it etc. BulletPoint4 : 【Environmentally Friendly and Sustainable】Laboratory flask cork trays are made from natural cork, which comes from sustainably managed forest resources. Compared to synthetic materials, we use a renewable resource that is environmentally friendly. In addition, the cork flask holder can be recycled after use, which can reduce the dependence on and waste of limited wood and is environmentally friendly. BulletPoint5 : 【Long-Lasting and Durable】The cork used in this lab beaker mat has excellent durability and stability, and can withstand the pressure and friction of various experimental operations. With proper maintenance, the cork flask holder can maintain its performance and shape for a long time, providing long-lasting and durable support for your lab. Color : Yellow ItemName : Laboratory Synthetic Cork Stand Mat Ring Holder Lab Flask Cork Stand for Round Bottom Flask - 80mm ItemPackageDimensions_Height : 3.5 centimeters ItemPackageDimensions_Length : 17 centimeters ItemPackageDimensions_Width : 15 centimeters ItemShape : Round ItemTypeKeyword : science-lab-support-rings Manufacturer : SagaSave Material : Cork NumberOfItems : 1 PartNumber : TY-SP-240124B1 ProductDescription : Specification: Material: Cork Length: 80mm/3.15", 100mm/3.94", 110mm/4.33", 120mm/4.72", 140mm/5.50" Thickness: 30mm/1.18" Suitability: 80mm/3.15": Suitable for 10ml-150ml Flasks 100mm/3.94": Suitable for 150ml-250ml Flasks 110mm/4.33": Suitable for 250ml-500ml Flasks 120mm/4.72": Suitable for 500ml-1000ml Flasks 140mm/5.50": Suitable for 1000ml-2000ml Flasks Weight: 80mm/3.15": 20g/0.64" 100mm/3.94": 30g/0.96" 110mm/4.33": 40g/1.29" 120mm/4.72": 50g/1.61" 140mm/5.50": 60g/1.93"