3-Finger Cork-Lined Extension Clamp with Swivel Boss Head, 3.4" Max

This 3-finger cork-lined laboratory clamp is constructed from powder-coated high-grade zinc alloy with thread-fitted actuating joints. The cork-lined prongs provide a cushioned slip-resistant hold and accept apparatus measuring up to 8.5 cm (3.4 inches). The screw adjustment allows precise pressure when gripping glass objects to avoid breakage. Includes a swivel bosshead that fits rods up to 18mm in diameter. Suitable for holding beakers, Erlenmeyer flasks, test tubes, boiling flasks, and burettes in professional laboratories, science classrooms, and household use. The cork-lined fingers should not be placed in direct heat.