Sizes:

    a) round size: 20mm, 21mm, 22.2mm, 23mm, 25.4mm, 28mm, 31.8mm, 35mm, 38.1mm, 38.1mm, 48mm, 50.8mm, 60mm, 63mm, 63.5mm, 73mm, 76.2mm, 88.9mm, 101.6mm, 114mm, 127mm, 133mm, 141.3mm, 159mm, 168mm

    b)rectangular size:20 x 10, 23 x 11, 24 x 12, 25 x 13, 28 x 13, 30 x 15,20 x 10, 23 x 11, 24 x 12, 25 x 13, 28 x 13, 30 x 15, 34 x 22, 36 x 23,38 x 25, 40 x 20, 40 x 30,48 x 23,50 x 20,50 x 25,60 x30 ,60 x 40,75 x 45, 80 x 40,80 x 60mm,95 x 45,100 x 40,100 x 50,80x80,100x100

 2) Thickness: 2.8 - 6.0mm