
The 3-Prong Universal Clamp With Holder by United Scientific is a vinyl-coated 3-prong clamp supplied with its own clamp holder, which rotates 360° so glassware can be set at any angle on a support rod. The jaws open to 2.25" (5.72 cm), fiberglass sleeves are included, and the manufacturer rates it to 80°C. Teaching and research labs use it to hold flasks, condensers, and columns on ring stands.