2 x Caged ball bearings for FSA headsets

 20 bearings in each cage at 5/32 inch size

FSA name is  Ball Bearing MR013 

Solid as a pair , so complete fr upper and lower cups

Fits FSA Pig Headset as upper bearing 

Fits FSA headset No.10 No.11 upper and lower 

5/32in Retainer MR013 (5/32inX20)