Nalgene 6165-0002 Polypropylene Tubing Pinch Clamps are Ideal for use with PVC laboratory tubing. Allows precise, one-hand regulation of fluid flow, from completely open, to restricted flow, to completely closed. Plastic clamp won't rust, corrode or deform. Molded in one piece polypropylene with no sharp edges. Fits tubing with O.D. of 1/4" to 7/16 ".
To Fit Tubing with O.D.: 1/4-in. to 7/16-in