tube may be a neon tube a fluorescent tube or other similar tube be it of glass plastic metal or the like the nature of the tube to be held is not a part of the invention the assembled device in accordance with this invention is designed to be affixed to a support surface such as a sign or the like although the nature of the surface to which the device is affixed is not a critical part of the invention and the shape of the support shown may be altered to suit the particular installation the two piece assembly in accordance with this invention comprises a tube holder 5 snapped into a support 7 which as shown in fig1 may be formed with a base 9 the base 9 is omitted from the view in fig2 the tube holder 5 is formed of a resilient material preferably a thermoplastic polyester tube holder 5 is shown in the drawings as being shaded for plastic although cylindrical support 7 is not so lined for reasons of clarity of drawing although it is preferably formed of the same material the tube holder has a substantially cylindrical body having a hole formed along its longitudinal axis as shown by dotted line a a in the wall of the hole is formed a recess 11 either by forming an annular notch in the wall of the hole along axis a a or by providing a projection 13 as shown in fig1 and 2.