This flask cork stand with the ability of acid and alkali, . It's lightweight,with strong flexibility and non-flammable. Lightweight design, appearance, and easy to use. The surface is smooth, and after fine treatment the toughness is strong. Features - Color: White. - Material: Plastic. - Size: 10.00X10.00X5.00cm/3.93X3.93X1.97in - Applied to make a flask stand to prevent falling, waterproof and acid- resistant. - Acid and alkali, ability, eco-friendly, non-flammable and strong impermeability. - Professional and practical design, lightweight, strong flexibility and compression resistance. - Large in friction coefficient thus can placement of the round bottom container safe and stable. - Wide use, easy use for different kinds of laboratory, chemistry classroom and so on. Package list: 3 x flask holders