Description Do you want to replace your old labs rack clamps? If so, our labs stand jig kits have you covered. It can be used not only in the laboratory, but also at home when necessary. It is a must-have item for the laboratory iron stand, and you deserve one. Features - Color: Silver+black. - Material:Iron. - Size:11.00X2.50X2.50cm/4.32X0.98X0.98in. - Iron body with plastic knobs, strong and not easy to break, ensuring it is sturdy and durable. - Adjustable boss head holder, more convenient to use, specially designed for laboratory use. - Can be used to effectively hold labs stand clips at right angles. Small and lightweight, it is easy to store and doesn't take up any space. - Knobs help provide extra leverage for easy and accurate adjustments and use. - It can clamp the experimental objects without loosening, which is a necessary object for the laboratory iron stand.Package list: 2 x Stand Clamp Holders