About this item

• One of the ball bearing retainer sizes (5/16” X 7 balls) for traditional bottom bracket crank service. (Please always measure your original parts to ensure you are ordering the right replacement parts)
• These bike bearings are sold as pack of 4 pcs.
• The bike crank bearings are made of high-quality carbon steel material.
• Bicycle bearings are lubricated for corrosion resistance and long service life. Please still put some lubricant during installation to maximize its service life
• These bicycle crank bearings cage could also replace loose bearings