Lab technicians and science educators, this EISCO universal retort clamp is exactly what you need for securing equipment during experiments. The 3-prong design provides secure holding for items up to 2.3 inches in diameter, with double adjustment points that let you position your equipment exactly where you need it. The non-slip vinyl coating on the grips protects your glassware from scratches and provides a secure hold without damaging delicate surfaces. The swivel bosshead is a really useful feature - it rotates 360 degrees and fits large rods up to 21mm in diameter, giving you maximum flexibility in setting up your laboratory apparatus. The silver-gray finish gives it that professional lab equipment look, and the sturdy construction ensures it can handle regular use in educational or research settings. Whether you're setting up distillation apparatus, supporting condensers, holding flasks, or any other laboratory setup requiring secure clamping, this retort clamp delivers reliable performance. The adjustable tension means you can secure delicate glassware without applying too much pressure, while still having enough grip for heavier items. Perfect for chemistry labs, physics demonstrations, educational settings, or any situation where you need to securely position laboratory equipment. EISCO is known for quality educational and laboratory equipment, so you can trust that this clamp is built to last through years of use. Your lab setups will be more stable and professional-looking with this versatile clamping solution handling the heavy lifting.