System Support Connection Type/Size 1/4 in to 5/16 in Corrugated Tubing Compatible Nominal Size 1/4 in 5/16 in Corrugated Tubing Fitting Material Polyamide 6 Fitting Length 0.79 in Nominal Size 1/4 in Tubing Size 0.276 in 0.393 in Chemical Resistant Yes For Use With Connecting Pieces Rail Clips Tops Tubing Profiles F G and M