Includes:
34mm (1 5/16") OD headset BLACK cups (2 pcs.)
bearings (2 pcs.) 
bottom bearing race (1 pc.)
bottom bearing race plastic ring (1 pc.)
top bearing race (1 pc.)
bearing gasket (1 pc.)
steel spacer (1 pc.)
top cap BLACK (1 pc.)
threaded starnut (1 pc.)
starnut screw (1 pc.)

Applications:
Headset cups bottom sides slip into a frame headtube that has an ID of 34mm +/- 2mm (1 5/16")
Most common headset used with a triple tree chopper forks on a cruiser, chopper, or motorized bicycle