Eisco Labs Cast Iron Closed Ring Clamp with Boss Head – 2.125" Diameter, Heavy Duty Lab Support Clamp

The Eisco Labs Cast Iron Closed Ring Clamp with Boss Head is a durable, heavy-duty clamp designed for secure support in laboratory setups. Constructed from solid cast iron, this ring clamp provides stability and reliability for holding glassware and other lab apparatus during experiments. The included boss head is fitted with a thumb-screw that securely accepts support rods up to 1/2" in diameter, ensuring a tight, slip-free grip.

With a 2.125" outside diameter and a 1.625" inside diameter, this closed ring clamp is ideal for holding funnels, flasks, or other round-bottomed labware. The extension distance from the boss head to the ring measures approximately 1.25", with a total reach of 4" from the boss head center line to the edge of the ring. Its robust design makes it an essential accessory for chemistry, physics, biology, and general science labs.