Description Made of iron material, which is durable and practical for the lasting use. Perfect for laboratory experiment and experimental lesson. It comes with lightweight, provides convenience to use. Features -Color: Silver. -Material: Iron. -Size: About 19.20X4.00X2.00cm/7.55X1.57X0.79in. -Note: the maximum opening distance of the clamp is about 4cm. - Made of iron, which makes the clamp more durable and heavy-duty, smooth to touch and rust resistant. - Lightweight and portable, compact size, it is very convenient for you to carry and store. - Designed specifically for experimental test tubes. Suitable for laboratory classes use - It is manufactured with professional technology to the of the product and can work for a long time. - Suitable for holding flask or a test tube, a necessary accessory in the laboratory, also suitable for home use. Made of iron, which makes the clamp more durable and heavy-duty, smooth to touch and rust resistant. Lightweight and portable, compact size, it is very convenient for you to carry and store. Designed specifically for experimental test tubes. Suitable for laboratory classes use It is manufactured with professional technology to the of the product and can work for a long time. Suitable for holding flask or a test tube, a necessary accessory in the laboratory, also suitable for home use.