Made of high quality zinc alloy, more durable. Whether you're setting up distillation apparatus, holding condensers, or securing various lab glassware, this clamp provides reliable performance without damaging your equipment Lab Clamp Application: Condenser, Laboratory flask., etc Adjustable Three Prong Swivel Flask Clamp Lab Test Tube Condenser Retort Stand Oumefar Zinc Alloy Clamp Three Jaw Clamp 3 Prong Lab Clamp Specification: Material: Zinc Alloy and Plastic Surface treatment: Electroplating Model: Big, Samll(Optional) Product length: Big: 27cm / 10., 6in Small: 19cm / 7., 5in Application: Condenser, Laboratory flask Package list: 1 * Clamp Note: There may be a slight deviation in the measurement of product dimensions. The three-jaw design is actually more stable than two-jaw clamps because it distributes pressure more evenly and holds items more securely. There's a plastic grip on the jaws that helps hold flasks, test tubes, and condensers firmly without scratching or damaging them Compared with two-jaw clamp, three-jaw clamp is more stable. Feature: Made of high quality zinc alloy, more durable.