... ", 1", 1 1/4", 1 1/2", 1 3/4", 2", 2 1/2", 3", 3 1/2", 4" Wall thickness: 2.5MM ... -1/4"323860.40.11551-1/2"384450.50.16931-3/4"455140.80.23862"5157403.50.90.32-1/2 ... -1/4"324170.80.12121-1/2"384861.050.17641-3/4"455661.250.25622"51634051.650.322-1/2"6480304 ...