Includes:
32.6mm (1 1/4") OD headset 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 (1 pc.)
threaded starnut (1 pc.)
starnut screw (1 pc.)
rubber cap for starnut screw (1 pc.)

steering tube spacer (1 pc.)

Applications:
Headset cups bottom sides slip into a frame headtube that has an ID of 32.6mm +/- 2mm (1 1/4")
Most common headset used with 1" triple tree chopper forks on a cruiser, chopper, or motorized bicycle