Circular Hollow Section

1/2IN X 3.2MM THK, 3/4IN X 3.2MM THK, 1IN X 2.6MM THK, 1IN X 3.2MM THK, 1IN X 4MM THK, 1+1/4IN X 2.6MM THK, 1+1/4IN X 3.2MM THK, 1+1/4IN X 4MM THK, 1+1/2IN X 3.2MM THK, 1+1/2IN X 4MM THK, 1+1/2IN X 5MM THK, 2IN X 3.2MM THK, 2IN X 5MM THK, 3IN X 3.2MM THK, 3IN X 4MM THK, 3IN X 5MM THK, 3+1/2IN X 3.2MM THK, 3+1/2IN X 4MM THK, 3+1/2IN X 5MM THK, 4IN X 3.6MM THK, 4IN X 5MM THK, 4IN X 6.3MM THK, 5IN X 5MM THK, 5IN X 6.3MM THK, 5IN X 8MM THK, 5IN X 10MM THK, 6IN X 5MM THK, 6IN X 6.3MM THK, 6IN X 8MM THK, 6IN X 10MM THK, 7IN X 5.4MM THK, 7IN X 6.3MM THK, 7IN X 8MM THK, 7IN X 10MM THK, 7IN X 12.5MM THK, 7IN X 16MM THK, 8IN X 6.3MM THK, 8IN X 8MM THK, 8IN X 10MM THK, 8IN X 12.5MM THK, 8IN X 16MM THK, 8IN X 20MM THK, 9IN X 6.3MM THK, 9IN X 8MM THK, 9IN X 10MM THK, 9IN X 12.5MM THK, 9IN X 16MM THK, 9IN X 20MM THK, 10IN X 6.3MM THK, 10IN X 8MM THK, 10IN X 10MM THK, 10IN X 12.5MM THK, 10IN X 16MM THK, 10IN X 20MM THK, 10IN X 25MM THK, 12IN X 8MM THK, 12IN X 10MM THK, 12IN X 12.5MM THK, 12IN X 16MM THK, 12IN X 20MM THK, 12IN X 25MM THK, 14IN X 8MM THK, 14IN X 10MM THK, 14IN X 12.5MM THK, 14IN X 16MM THK, 14IN X 20MM THK, 14IN X 25MM THK, 16IN X 10MM THK, 16IN X 12.5MM THK, 16IN X 16MM THK, 16IN X 20MM THK, 16IN X 25MM THK, 16IN X 32MM THK, 18IN X 10MM THK, 18IN X 12.5MM THK, 18IN X 16MM THK, 18IN X 20MM THK, 18IN X 25MM THK, 18IN X 32MM THK, 18IN X 40MM THK