Description Are you looking for professional, yet affordable laboratory watch glasses? Are you in search of sturdy, trustworthy tool that can do multiple works at once? If yes, look no further! Our professional laboratory watch glasses must meet your needs. It is one of the best choices for you. Features - Material: Glass. - Size: 4.50X4.50X0.30 cm/1.77X1.77X0.12 inch. - Multi-functional application, it can be used as evaporating dish, also as beaker cover, or as loading carrier. - It is made of good quality material, durable and safe, excellent and great, serving for long time. - High transparency design, easy to observe experimental results, simple and convenient to use the watch glasses. - You will have good use experience because of the perfect workmanship of this product. - The watch glasses are useful and excellent, suitable for chemistry classroom, laboratory, testing institution. Multi-functional application, it can be used as evaporating dish, also as beaker cover, or as loading carrier. It is made of good quality material, durable and safe, excellent and great, serving for long time.​ High transparency design, easy to observe experimental results, simple and convenient to use the watch glasses. You will have good use experience because of the perfect workmanship of this product. The watch glasses are useful and excellent, suitable for chemistry classroom, laboratory, testing institution​.