Looking for the following sizes (please refer to picture for how to measure these):

1) 2.5" Length, 0.75" Bore

2) 3" Length, 0.5" Bore

3) 3" Length, 1.25" Bore

4) 3.5" Length, 1" Bore

5) 4" Length, 1" Bore

6) 4.5" Length, 1" Bore

7) 6" Length, 1.25" Bore

More photos available here: http://www.hemingray.info/database/floortubes.html

See me at the National!