Φ50F75: Dia.50mm, F=75mm;
Φ50F100: Dia.50mm, F=100mm;
Φ50F150: Dia.50mm, F=150mm;
Φ50F200: Dia.50mm, F=200mm;
Φ50F300: Dia.50mm, F=300mm;
Φ75F75: Dia.75mm, F=75mm;
Φ75F100: Dia.75mm, F=100mm;
Φ75F150: Dia.75mm, F=150mm;
Φ75F200: Dia.75mm, F=200mm;
Φ75F300: Dia.75mm, F=300mm;