Size 1”x 5/8-11 1-1/8” x 5/8-11 1-1/4” x 5/8-11 1-1/2” x 5/8-11 1-3/4” x 5/8-11 2” x 1-1/4-7 2-1/4” x 1-1/4-7 2-1/2” x 1-1/4-7 3” x 1-1/4-7 3-1/4” x 1-1/4-7 3-1/2” x 1-1/4-7 4” x 1-1/4-7 4-1/4” x 1-1/4-7 4-1/2” x 1-1/4-7 5” x 1-1/4-7 5-1/4” x1-1/4-7 5-1/2” x 1-1/4-7 6” x 1-1/4-7 6 -1/4”x 1-1/4-7 Standard tube length:300mm,350mm,400mm. Other lengths are available upon request. 1-1/4"UNC -7" thread, Other threads are available upon request.