3 Finger, Vinyl Coated Extension Lab Clamp, 8.5cm maximum clamp opening.Suitable for beakers, Erlenmeyer flasks, test-tubes, boiling flasks and burettes. Chosen for its quality: made from a strong alloy, not iron so won't rust!Clamp constructed of powder coated high grade Zinc die cast construction. High grade, nontoxic. powder coating. Non-ferrous, rust free & long lasting use for any laboratory applicationThe 3 fingers are coated in vinyl for higher temperature applications and to provide a strong, slip-free hold.Complete metal constructions, thread fitted actuating jointsDimensions:Maximum clamp opening is 8.5cm3 Vinyl Coated Clamp Fingers - longer vinyl section than on other standard onesCompletely metal constructions, thread fitted actuating joints10mm diameter, 14cm long Stainless Steel Connecting rod