We can also manufacture the specified sizes you need.
Item Number Outer Diameter(D) inches Metric(mm) Inner Diameter(H ) inches Metric(mm) segment Dimension (T×H×L) Segment Number LF-H250 10" 250 1"/2" 25.4/50 2.8×7/8×40 18 LF-H300 12" 300 1"/2" 25.4/50 2.8/3.0/3.2×8/10×40 22 LF-H350 14" 350 1"/2" 25.4/50 3.2/4.0×8/10×40 24 LF-H400 16" 400 2" 50 4.0/4.2×8/10×40 28 LF-H450 18" 450 2" 50 4.0/4.2×8/10×40 32 LF-H500 20" 500 2"/3" 50/80 4.2/4.6×8/10×40 36 LF-H600 24" 600 2"/3" 50/80 4.6/5.0×8/10×40 42 LF-H700 28" 700 2"/3" 50/80 6.5/7.5×10/12×24 50 LF-H900 36" 900 3"/4" 80/100 7.0/7.5×10/12×24 64 LF-H1000 40" 1000 4" 100 7.0/7.5×10/12×24 70 LF-H1200 48" 1200 4" 00 7.5/8.0×10/12×24 80