Elevate your laboratory experience with this 4-pack of precision-engineered 5-inch test tube clamps from Dunrite Instruments. These essential laboratory tools feature self-closing jaws using a spring-operated mechanism for secure, reliable test tube handling during your chemistry and biology experiments. The robust construction allows these clamps to withstand high temperatures, making them ideal for various laboratory procedures. Measuring 5 inches in length, these Stoddard tongs provide excellent control and stability when manipulating test tubes. The lightweight design, weighing just 0.5 ounces per clamp, ensures comfortable handling during extended lab sessions while maintaining a firm grip on your laboratory glassware. These versatile clamps are an indispensable addition to any scientific workspace, combining durability with precision for consistent, reliable performance.