Features 【Durable Clamp】 Constructed with an extension rod, this lab clamp can be easily attached to a frame using a boss head clamp or similar tool. The large boss head allows for easy and accurate adjustment, providing extra leverage. 【Rubber Jaws】 The soft rubber jaws of this clamp ensure the safe protection of your glassware, preventing any scratching. It provides stable fixation for experimental equipment and can be used for clamping beakers, flasks, test tubes, and other items. 【Easy to Use】 The adjustable clamp holder base can be easily fixed to the edge of a table. The 3-finger prong clamp with rubber-coated jaws is made of strong die-cast construction. The metal covered jaws offer protection and a secure grip, allowing for easy clamping of irregular shapes. 【High Quality Material】 Made of durable metal material, this 3 prong flask clamp is 100% brand new and of high quality. It has a long service life and is suitable for use with flasks, beakers, and crucibles in scientific experiments. 【Product Package】 The package includes a lab clamp with a 3-prong finger adjust jaw and a rubber-coated head, along with an adjustable boss head clamp holder. This clamp is widely used in laboratories for holding bottles, test tubes, and other items. Features:100% brand new and high quality.Made of durable metal material, the clamp has long service life.The adjustable clamp base can be easily fixed on a edge of desk.Plastic covered prongs would not leave any scratches on objects Widely used for holding flasks, test tubes and so on in lab. Specifications:Material: MetalLength: 22cm/8.7inWeight: 212g(approx.) Package Includes:1 x Clamp Package List