Mikuni tye slow jets for:

Yamaha:

XS1100: 1978-1982

XS650: 1978-1980

XS400: 1978-1981   2A2

XS400:  1980-1982  4Gs

Suzuki:

GS1000: 1980-1981

GS850:  1980-1981

GT750: L / M  1974-1975 

GS650:  1981-1982

GN125:  1983

Length: 14mm

Thread: 5mm

Diameter: 4mm