Średnica / Nominal diameter

•  0,75" (19mm) (1)
•  1" / 25,4mm (10)
•  1,3" (32mm) (1)
•  1,4" (36mm) (5)
•  2" (50mm) (5)
•  3" (70mm) (3)
•  4" (100mm) (2)
•  6,5" (165mm) (4)
•  8" (200mm) (4)
•  10" (250mm) (5)
•  12" (300mm) (7)
•  15" (380mm) (6)
•  18" (460mm) (3)
•  21" (530mm) (2)