2 prong, Cork Lined, Universal clamp on rod, 11cm maximum clamp opening. Suitable for beakers, Erlenmeyer flasks, test-tubes, boiling flasks and burettes. Chosen for its quality: made from a strong alloy, not iron so won't rust!Clamp constructed of powder coated high grade Zinc die cast construction. High grade, nontoxic. powder coating. Non-ferrous, rust free & long lasting use for any laboratory application2 prong cork lined clamp attached to stainless steel rodCork lined prongs provide a cushioned, slip resistant holdComplete metal constructions, thread fitted actuating jointsThe round extension arm allows the clamp to be rotated 360 degrees as well as vary the distance from the support apparatus.Dimensions:-Maximum clamp opening is 11cm14cm Stainless Steel Connecting RodCompletely metal constructions, Thread fitted actuating joints10mm diameter connecting rodCaution:Due to the cork lining it is not recommended that the prongs of the clamp are placed in direct heat.