Bearing Spacer For GM #2 (Metric) Front Hubs; Midsize or Metric Spindle; (SET 3/SET 6); Steel. 
 
This spacer fixes clearance issues with some hubs at the outer bearing.
 
For Use with LM67048/M12649 Bearings and Most Hubs Using LM67048/LM12748 (SET 6/SET 2)
 
Inner ID: 1.254, Outer ID: 0.85