BMX Spainish style bottom bracket bearing MR190537-2RS, MR1937-2RS, 6904/19.05-2RS.
ID: 19.05 mm
OD: 37.00 mm
W: 9.00 mm
Chrome steel GCR15 / SUJ2 / 100CR6 / SAE52100 material for races and balls
Steel cage/retainer
HTHS grease
Application: BMX Spainish stype bottom bracket