Bel-Art Scienceware 182280000 Acetal Plastic Tubing Mid-Range Clamp (Pack of 12)
Acetal Plastic Tubing Clamps will not distort, rust, or corrode. Mid-Range clamp has 15-position stepped adjustment that controls flow from full open to complete closure. Fits tubing from 3.2 to 11mm (1/8 to 7/16") O.D. 12 per bag.