Our kit provides three of the most common inner diameters of Tefzel tubing used in HPLC systems. Tefzel (ETFE) Tubing delivers enhanced pressure-holding capabilities and continuous mechanical stability. Tefzel tubing is also ideal for solvent resistance. The unique material used for this tubing provides low gas permeability. This kit includes: (2) 1528 Tefzel Tubing - 1/16" OD x .030" ID x 5', (2) 1529 Tefzel Tubing - 1/16" OD x .010" ID x 5', (2) 1530 Tefzel Tubing - 1/8" OD x .062" ID x 5' (1) A-327 Polymer Tubing Cutter.