• 19mm or 24mm
• Sealed Bearings
• Crank Arm Spacers & Tube Spacer Included
• Weight: 6 oz Mid BB (only compatible with Mid BB Frames)

NOTE: The inner diameter of the bearing is determined by the spindle diameter of your crankset, most bikes come stock with cranksets having a 19mm diameter spindle. Check the specification of your crankset to see what size spindle it uses. Any questions please contact us.