Ciki engaged swing line rotor famfo ne wani nau'i na ciki engaged girman famfo, waje rotor ne zagaye arc hakora siffar, ciki rotor ne sabon nau'i na rotor famfo na gajeren outward swing line.

Saboda tsarin famfo mai sauki, ƙananan amo, sauƙi na mai, kyakkyawan aikin shan kai da kyakkyawan halaye masu saurin juyawa, ana amfani da shi sosai a cikin tsarin karfin ruwa mai ƙarancin matsin lamba, wanda za a iya amfani dashi a matsayin famfo mai ƙarfi ko famfo mai lubrication da famfo mai sanyaya. A halin yanzu wannan famfo ne a hankali maye gurbin CB irin, KCB irin 2CY irin gear man fetur famfo.