HIGH VISIBILITY REFLECTIVE TUBE MADE FROM 1 1/4" THIN WALL BLACK PVC TUBING. THE TUBE IS RIGID, SEAMLESS, AND COVERED WITH RETROREFLECTIVE STRIPS. IT IS AVAILABLE WITH OR WITHOUT GROMMETS. IT IS USED IN MINES TO MARK EXIT DOORS, HAZARD AREAS, ETC. IT IS PRESENTED IN VARIOUS LENGTHS FROM 6" TO 72", WITH 50 TUBES IN A BOX

GENERAL INTERPRETATIVE RULES 1 AND 6; LEGAL NOTE 8 TO CHAPTER 39; THE TEXT OF CODES 3917, 3917 23, 3917 23 90 AND 3917 23 90 90; THE HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 3917.