12 Pack 40mm Outer Diameter Bicycle Ball Bearing Cage Retainer With 20 Balls Inner Diameter 33.5mm Steel Build For Crank And Wheel Bearings Durable Bike Part Upgrade Gear Beef Up Your Ride

12-Pack Steel Bicycle Ball Bearing Cage Retainers 40mm OD
✔️ Outer 40mm OD, inner 33.5mm ID, steel cage, 20 balls per retainer, 12-pack

This 12-pack set features steel ball bearing cages built for bicycles' crank and wheel bearings. It's a reliable replacement part for maintenance and upgrades on ordinary bikes, mountain bikes, lowrider bikes, and stretch bikes.

✅ Material: steel
✅ Outer diameter: 40mm (1.57")
✅ Inner diameter: 33.5mm (1.32")
✅ Includes 12 pieces in the set
✅ Each retainer holds 20 balls for smooth rotation

💡 What is a bicycle ball bearing cage retainer with 20 balls used for in common bike maintenance?

It's a handy upgrade that helps keep bearings aligned in crank and wheel assemblies.

- handy replacement for crank bearings across many bikes - fits 40mm outer diameter cages with 33.5mm inner diameter head parts - suitable for ordinary bicycles, mountain bikes, lowrider, and stretch bikes - steel construction ensures durability and long service life