Seven Ball Bearing Cage Retainer For Bike Crank And Wheel Bearings, 20mm Outer Diameter, 13mm Inner Diameter, 4.76mm Ball Size, Stainless Steel, 7 Ball Set, Durable Bike Part

Stainless Steel 7-Ball Bearing Retainer Cage for Bike Cranks
✔️ 20mm outer 13mm inner 4.76mm balls fits single bike bearing spot

This handy stainless steel cage holds seven balls to keep bike crank and wheel bearings spinning smooth on mountain bikes lowriders and other everyday cycles.

✅ Stainless steel build for solid durability
✅ 7 balls sized at 4.76mm each
✅ 20mm outer diameter 13mm inner diameter
✅ Works as a direct swap for crank bearings

💡 What is a ball bearing cage used for on bikes? A ball bearing cage keeps the balls evenly spaced so your wheels and cranks turn freely without extra drag. - Stainless steel resists rust during wet rides - Retainer design makes install quick on standard headsets - Matches common 13mm inner setups on many bikes - Gives smooth action for racing or trail use