4-Prong Vinyl-Coated Clamp with Swivel Boss Head, 4.1" Max

This four-prong laboratory clamp features vinyl-coated prongs and is mounted on a swivel bosshead. The clamp accepts apparatus measuring up to 8.5cm (3.4") and the bosshead fits rods up to 18mm in diameter. The zinc die-cast construction carries a nontoxic powder coating that is non-ferrous and rust-free. The screw adjustment allows precise pressure control when gripping glassware, helping to prevent breakage. The swivel joint between the clamp and bosshead provides flexible positioning. The vinyl-coated prongs deliver a slip-free hold and tolerate higher temperatures than bare metal. This clamp is suitable for securing beakers, Erlenmeyer flasks, test tubes, boiling flasks, and burettes.