An economical, easy method for securing tubing to fittings. Handy Clamps are made from a tough nylon material that can withstand temperatures to 135 °C. No specialized tools are necessary for securing or removing Handy Clamps. Size: A Min. diameter: .220 in. 5.6 mm Max. diameter: .268 in. 6.8 mm Fits 1/4" O.D. tubing | border="0"> | ||||||