Brand new set of headstock / steering bearings to fit:
 
Suzuki GS 850 G (1979-1986).
 
This set of head stock bearings are taper roller style bearings that have been manufactured to replace the original set of steering bearings on a Suzuki GS850 G, the models are GN to GG. Thea years of manufacture are shown above. 
 
Top bearing sized ID25 x OD47 x WTH15.
Bottom bearing sized ID30x OD55 x WTH17.
 
All sizes in mm