This two prong clamp has flat, vinyl covered clamp jaws that hold beakers and flasks firmly at any angle with variable distance from support. One jaw is fixed, other opens against a Kontes® Stainless steel compression spring. Opening is gradual to maximum angle without binding. Noncorrosive, easy-to-clean clamps are nickel-plated zinc with a seamless nickel-plated brass extension tube, brass compressing screw, and pivot pin. Length: 23cm. Grip Size: 64mm. Extension Arm Length: 13mm. Extension Arm O.D.: 11mm. Kimble Chase #: 675725-0064.