Specification:

25.4mm ID x 155.6mm x 2.5mm Thickness ( 1" x 6-1/8" x 2.5mm)

25.4mm ID x 108.0mm x 2.5mm Thickness ( 1" x 4-1/4" x 2.5mm)

25.4mm ID x 228.6mm x 3.2mm Thickness ( 1" x 9" x 3.2mm)

25.4mm ID x 266.7mm x 3.2mm Thickness (1" x 10-1/2" x 3.2mm)

25.4mm ID x 215.9mm x 3.2mm Thickness (1" x 8-1/2" x 3.2mm)

93.65mm ID x 215.9mm x 3.2mm Thickness (3.687"ID x 8.5" x 0.125")

50mm ID x 273mm x 3.5mm Thickness (2" x 10-3/4" x 3.5mm)

and More !