|Dimensions - d (inside diameter)||7mm|
|Dimensions - D (outside diameter)||13mm|
|Dimensions - B (width)||4mm|
Original Enduro single row ball sealed bike bearing 7mm inside x 13mm outside x 4mm width
Grade 10 Chromium Steel Balls:
High precision balls are within 10/1,000,000″ round, twice as round as the industry standard, at it's highest level.
52100 High Carbon Chromium Alloy Races:
Vacuum de-gassed process for the purest chromium alloy steel, hardened to R-62, extremely tough and very durable. Polished to a mirror finish for ABEC-3 precision and noiseless movement.
Riveted Steel Retainer for toughness, ABEC-3 tolerances and noise tested, C-3 or C-N Internal Clearance.
Bearing Code: MR 137
Dimensions: 7 x 13 x 4mm
Grease: Mobile HP 222
Application: Hubs, Bottom Brackets