
The 2-Prong Extension Clamp With Steel Rod by United Scientific is a die-cast 2-prong clamp on a chrome-plated steel rod, measuring 8 inches (20.32 cm) overall. Cork-lined jaws hold test tubes, burettes, and small glassware without bare metal contact, and the clamp is rated for use up to 60°C (140°F). It is a staple holder for ring stands in student, teaching, and research laboratories.