DescriptionThe spring spiral water stop clip is made of high-grade iron material, which is strong and durable. Squeeze the handles on both sides hard, let go after the latex tube passes through, then the tube can be clamped. Easy to use, save time and energy, high-quality test tube clamps and water stop clamps are very suitable for laboratory consumables.Features- Color: Silver. - Material: Iron. - Size:5.50 x 4.50 x 1.00cm/ 2.16 x 1.77 x 0.39 inch. - Made of iron, durable and wear resistant for long-term use. - The spring water stop clip with strong bite force, prevent from leaking. - The clip designed for laboratory instrument, school teaching, student, etc. - It has superb technology, perfect details and not easily deformed sturdy. It can meet your daily demands. - Ergonomic handle offers easier clamping and reduced hand fatigue.