The Flask Stand Silicone by United Scientific is a non-slip silicone support for round-bottom flasks up to 2000 mL, beakers and dishes. Twelve molded-in steps grip a range of flask sizes, and the silicone is heat resistant to 250°C, so warm glassware can be set down straight after heating. It measures 16 cm across and 5 cm tall and suits synthesis and teaching labs.