The QHYCFW2 is available in two sizes; medium and small, to meet the needs of different models of astronomical cameras and astronomical telescopes. (The large version has been superseded by the QHYCFW3.)
QHYCFW2-S-6P Small size filter wheel. Supports six 1.25" mounted filters. The filter wheel thickness is only 15.5mm. The weight is 465 grams.