Standard 3-Prong Extension Clamp, Single, Large, Nickel-Plated Zinc

Securely hold your flasks, beakers and burettes|An additional holder must be purchased in order to attach clamps to lab-frames, support stands or other apparatus|Designed to securely hold a large variety of glassware and apparatus. Ideal for irregularly shaped objects. Choose single adjustment style for standard use where one prong or finger is adjusted using a wing nut, while the other prong remains stationary or for a more versatile clamp choose the dual adjustment style. Utilizing thumbscrews, both prongs are easily adjusted over a wider range. Available in 3 sizes, small, medium, and large. Dual adjustable clamps are offered in either stainless steel or nickel plated zinc. Supplied with non-slip vinyl sleeves or for temperatures above 212F (100C), fiberglass covers.